Finding the Fourth Proportional to 131,686.20, 181,725.69 and 71,255.52

Step by Step Solution

1. Step 1: Write the proportion equation
   131,686.20 : 181,725.69 = 71,255.52 : x
2. Step 2: Convert to fraction form
   131,686.20/181,725.69 = 71,255.52/x
3. Step 3: Cross multiply
   131,686.20x = 181,725.69 × 71,255.52
4. Step 4: Simplify right side
   131,686.20x = 12,948,958,538.31
5. Step 5: Solve for x
   x = 12,948,958,538.31/131,686.20
6. Step 6: Final answer
   x = 98,331.93