Finding the Fourth Proportional to 113,502.72, 156,591.12 and 65,738.64

Step by Step Solution

1. Step 1: Write the proportion equation
   113,502.72 : 156,591.12 = 65,738.64 : x
2. Step 2: Convert to fraction form
   113,502.72/156,591.12 = 65,738.64/x
3. Step 3: Cross multiply
   113,502.72x = 156,591.12 × 65,738.64
4. Step 4: Simplify right side
   113,502.72x = 10,294,087,264.88
5. Step 5: Solve for x
   x = 10,294,087,264.88/113,502.72
6. Step 6: Final answer
   x = 90,694.63