Finding the Fourth Proportional to 113,141.18, 156,117.49 and 65,385.32

Step by Step Solution

1. Step 1: Write the proportion equation
   113,141.18 : 156,117.49 = 65,385.32 : x
2. Step 2: Convert to fraction form
   113,141.18/156,117.49 = 65,385.32/x
3. Step 3: Cross multiply
   113,141.18x = 156,117.49 × 65,385.32
4. Step 4: Simplify right side
   113,141.18x = 10,207,791,342.39
5. Step 5: Solve for x
   x = 10,207,791,342.39/113,141.18
6. Step 6: Final answer
   x = 90,221.71