Finding the Fourth Proportional to 131,359.50, 181,280.43 and 71,743.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,359.50 : 181,280.43 = 71,743.50 : x
2. Step 2: Convert to fraction form
   131,359.50/181,280.43 = 71,743.50/x
3. Step 3: Cross multiply
   131,359.50x = 181,280.43 × 71,743.50
4. Step 4: Simplify right side
   131,359.50x = 13,005,692,529.71
5. Step 5: Solve for x
   x = 13,005,692,529.71/131,359.50
6. Step 6: Final answer
   x = 99,008.39