Finding the Fourth Proportional to 131,057, 180,862.50 and 74,470.76

Step by Step Solution

1. Step 1: Write the proportion equation
   131,057 : 180,862.50 = 74,470.76 : x
2. Step 2: Convert to fraction form
   131,057/180,862.50 = 74,470.76/x
3. Step 3: Cross multiply
   131,057x = 180,862.50 × 74,470.76
4. Step 4: Simplify right side
   131,057x = 13,468,967,830.50
5. Step 5: Solve for x
   x = 13,468,967,830.50/131,057
6. Step 6: Final answer
   x = 102,771.83