Finding the Fourth Proportional to 131,758.29, 181,825.61 and 71,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,758.29 : 181,825.61 = 71,328.50 : x
2. Step 2: Convert to fraction form
   131,758.29/181,825.61 = 71,328.50/x
3. Step 3: Cross multiply
   131,758.29x = 181,825.61 × 71,328.50
4. Step 4: Simplify right side
   131,758.29x = 12,969,347,158.34
5. Step 5: Solve for x
   x = 12,969,347,158.34/131,758.29
6. Step 6: Final answer
   x = 98,432.87