Finding the Fourth Proportional to 131,572.50, 181,574.37 and 71,956.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,572.50 : 181,574.37 = 71,956.50 : x
2. Step 2: Convert to fraction form
   131,572.50/181,574.37 = 71,956.50/x
3. Step 3: Cross multiply
   131,572.50x = 181,574.37 × 71,956.50
4. Step 4: Simplify right side
   131,572.50x = 13,065,456,154.91
5. Step 5: Solve for x
   x = 13,065,456,154.91/131,572.50
6. Step 6: Final answer
   x = 99,302.33