109.31
To find this you can convert 58% to decimal form, which is .58. Once you have a decimal form of a percent, you can multiply it by the number you are taking the percent of and get an answer. So .58 times something equals 63.4. You can write this as an equation:
.58x = 63.4
and solve for x, which would get 63.4/.58, which equals 109.31.