Finding the Fourth Proportional to 131,710.59, 181,760.72 and 71,280.99

Step by Step Solution

1. Step 1: Write the proportion equation
   131,710.59 : 181,760.72 = 71,280.99 : x
2. Step 2: Convert to fraction form
   131,710.59/181,760.72 = 71,280.99/x
3. Step 3: Cross multiply
   131,710.59x = 181,760.72 × 71,280.99
4. Step 4: Simplify right side
   131,710.59x = 12,956,083,708.31
5. Step 5: Solve for x
   x = 12,956,083,708.31/131,710.59
6. Step 6: Final answer
   x = 98,367.82