Finding the Fourth Proportional to 113,141.61, 156,118.07 and 65,385.74

Step by Step Solution

1. Step 1: Write the proportion equation
   113,141.61 : 156,118.07 = 65,385.74 : x
2. Step 2: Convert to fraction form
   113,141.61/156,118.07 = 65,385.74/x
3. Step 3: Cross multiply
   113,141.61x = 156,118.07 × 65,385.74
4. Step 4: Simplify right side
   113,141.61x = 10,207,894,426.80
5. Step 5: Solve for x
   x = 10,207,894,426.80/113,141.61
6. Step 6: Final answer
   x = 90,222.28