Finding the Fourth Proportional to 131,522.50, 181,501.05 and 71,906.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,522.50 : 181,501.05 = 71,906.50 : x
2. Step 2: Convert to fraction form
   131,522.50/181,501.05 = 71,906.50/x
3. Step 3: Cross multiply
   131,522.50x = 181,501.05 × 71,906.50
4. Step 4: Simplify right side
   131,522.50x = 13,051,105,251.83
5. Step 5: Solve for x
   x = 13,051,105,251.83/131,522.50
6. Step 6: Final answer
   x = 99,230.97