Finding the Fourth Proportional to 113,719.46, 156,989.10 and 88,168.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,719.46 : 156,989.10 = 88,168.02 : x
2. Step 2: Convert to fraction form
   113,719.46/156,989.10 = 88,168.02/x
3. Step 3: Cross multiply
   113,719.46x = 156,989.10 × 88,168.02
4. Step 4: Simplify right side
   113,719.46x = 13,841,418,108.58
5. Step 5: Solve for x
   x = 13,841,418,108.58/113,719.46
6. Step 6: Final answer
   x = 121,715.48