Answer:
x=100
Step-by-step explanation:
Technically, using the Pythagorean theorem of 28^2 + 96^2 = x^2 you would have gotten the same answer, but looking up a list of pythagorean triples helps. In this case, the base triple is 7, 24, 25. Multiplying each by 4 gives you the legs 28 and 96, with a hypotenuse of 100.
