Finding the Fourth Proportional to 113,155.20, 156,179.88 and 74,916.18

Step by Step Solution

1. Step 1: Write the proportion equation
   113,155.20 : 156,179.88 = 74,916.18 : x
2. Step 2: Convert to fraction form
   113,155.20/156,179.88 = 74,916.18/x
3. Step 3: Cross multiply
   113,155.20x = 156,179.88 × 74,916.18
4. Step 4: Simplify right side
   113,155.20x = 11,700,400,002.46
5. Step 5: Solve for x
   x = 11,700,400,002.46/113,155.20
6. Step 6: Final answer
   x = 103,401.35