Finding the Fourth Proportional to 113,105.86, 169,662.85 and 56,915.37

Step by Step Solution

1. Step 1: Write the proportion equation
   113,105.86 : 169,662.85 = 56,915.37 : x
2. Step 2: Convert to fraction form
   113,105.86/169,662.85 = 56,915.37/x
3. Step 3: Cross multiply
   113,105.86x = 169,662.85 × 56,915.37
4. Step 4: Simplify right side
   113,105.86x = 9,656,423,740.72
5. Step 5: Solve for x
   x = 9,656,423,740.72/113,105.86
6. Step 6: Final answer
   x = 85,375.10