9514 1404 393
Answer:
 98
Explanation:
The angle bisector divides the triangle proportionally. This means ...
 VY/VT = KY/KT
 VY = VT(KY/KT)
 x = VY +KY = (KY(VT/KT) +KY) . . . . . use the expression for VY
 x = KY(VT/KT +1) . . . . . . . . . . . . . . . factor out KY
 x = (68)(57/129.2 +1) . . . . . . . . .. put in the numbers
 x = 98