All 100 targets have a solution.
\(1 = 1^{\frac{ 49 }{ 7 }}\)
\(2 = 9 - ( 14 - 7 )\)
\(3 = \frac{ 19 - 7 }{ 4 }\)
\(4 = 17 - 4 - 9 \)
\(5 = \frac{ 14 }{ 7 } + \sqrt{9 }\)
\(6 = \frac{ 49 }{ 7 } - 1 \)
\(7 = 9 - \frac{ 14 }{ 7 }\)
\(8 = 19 - 4 - 7 \)
\(9 = 4 \cdot 7 - 19 \)
\(10 = 17 - \sqrt{49 }\)
\(11 = \frac{ 14 }{ 7 } + 9 \)
\(12 = 14 + 7 - 9 \)
\(13 = \frac{ 17 + 9 }{ \sqrt{4 } }\)
\(14 = \sqrt{14^{9 - 7 }}\)
\(15 = \sqrt{49} + 1 + 7 \)
\(16 = 14 - 7 + 9 \)
\(17 = 91 - 74 \)
\(18 = \frac{ 14 }{ 7 } \cdot 9 \)
\(19 = 4 \cdot 9 - 17 \)
\(20 = \frac{ 71 + 9 }{ 4 }\)
\(21 = \sqrt{147 \cdot \sqrt{9 }}\)
\(22 = 71 - 49 \)
\(23 = 94 - 71 \)
\(24 = 17 + \sqrt{49 }\)
\(25 = 41 - 7 - 9 \)
\(26 = \frac{ 91 \cdot \sqrt{4} }{ 7 }\)
\(27 = ( 7 - 1 \cdot 4 ) \cdot 9 \)
\(28 = 47 - 19 \)
\(29 = \frac{ 174 }{ \sqrt{9 }! }\)
\(30 = 14 + 7 + 9 \)
\(31 = 19 \cdot \sqrt{4} - 7 \)
\(32 = 49 - 17 \)
\(33 = \sqrt{4} \cdot 7 + 19 \)
\(34 = ( 4 - 1 ) \cdot 9 + 7 \)
\(35 = ( 14 - 9 ) \cdot 7 \)
\(36 = 19 + 4! - 7 \)
\(37 = 47 - 1 - 9 \)
\(38 = 79 - 41 \)
\(39 = 41 + 7 - 9 \)
\(40 = \frac{ \frac{ 7! }{ 14 } }{ 9 }\)
\(41 = 49 - 1 - 7 \)
\(42 = 49 \cdot 1 - 7 \)
\(43 = 41 - 7 + 9 \)
\(44 = 91 - 47 \)
\(45 = 19 \cdot \sqrt{4} + 7 \)
\(46 = 47 - 1^{9 }\)
\(47 = 4 \cdot 7 + 19 \)
\(48 = ( 19 - 7 ) \cdot 4 \)
\(49 = \frac{ 147 }{ \sqrt{9 } }\)
\(50 = 1^{7} + 49 \)
\(51 = 41 + 7 + \sqrt{9 }\)
\(52 = \frac{ 91 \cdot 4 }{ 7 }\)
\(53 = 4 \cdot 9 + 17 \)
\(54 = 79 - 1 - 4 !\)
\(55 = 74 - 19 \)
\(56 = 97 - 41 \)
\(57 = ( 7 - 4 ) \cdot 19 \)
\(58 = \frac{ 174 }{ \sqrt{9 } }\)
\(59 = 17 \cdot 4 - 9 \)
\(60 = 71 - \sqrt{4} - 9 \)
\(61 = 71 - 4 - \sqrt{9 }!\)
\(62 = 7 \cdot \sqrt{9} + 41 \)
\(63 = ( 14 - 7 ) \cdot 9 \)
\(64 = 71 - \sqrt{49 }\)
\(65 = 79 - 14 \)
\(66 = 17 + 49 \)
\(67 = 1 \cdot 7 \cdot 9 + 4 \)
\(68 = 7^{\sqrt{4}} + 19 \)
\(69 = 19 \cdot 4 - 7 \)
\(70 = 71 - 4 + \sqrt{9 }\)
\(71 = 17 \cdot 4 + \sqrt{9 }\)
\(72 = 71 + 4 - \sqrt{9 }\)
\(73 = 74 - 1^{9 }\)
\(74 = 1^{9} \cdot 74 \)
\(75 = 1^{9} + 74 \)
\(76 = 71 - 4 + 9 \)
\(77 = 94 - 17 \)
\(78 = \sqrt{49} + 71 \)
\(79 = 1^{4} \cdot 79 \)
\(80 = 1^{4} + 79 \)
\(81 = 9^{\frac{ 14 }{ 7 }}\)
\(82 = ( 9 - 7 ) \cdot 41 \)
\(83 = 97 - 14 \)
\(84 = 71 + 4 + 9 \)
\(85 = ( 9 - 4 ) \cdot 17 \)
\(86 = 94 - 1 - 7 \)
\(87 = 94 \cdot 1 - 7 \)
\(88 = 91 + 4 - 7 \)
\(89 = 14 \cdot 7 - 9 \)
\(90 = ( 4 - 1 + 7 ) \cdot 9 \)
\(91 = 97 - ( 4 - 1 )!\)
\(92 = 97 - 1 - 4 \)
\(93 = 14 + 79 \)
\(94 = 91 - 4 + 7 \)
\(95 = 1^{7} + 94 \)
\(96 = 97 - 1^{4 }\)
\(97 = 1^{4} \cdot 97 \)
\(98 = 1^{4} + 97 \)
\(99 = 97 \cdot 1 + \sqrt{4 }\)
\(100 = 94 - 1 + 7 \)