Finding the Fourth Proportional to 131,789.96, 181,870.21 and 71,360.63

Step by Step Solution

1. Step 1: Write the proportion equation
   131,789.96 : 181,870.21 = 71,360.63 : x
2. Step 2: Convert to fraction form
   131,789.96/181,870.21 = 71,360.63/x
3. Step 3: Cross multiply
   131,789.96x = 181,870.21 × 71,360.63
4. Step 4: Simplify right side
   131,789.96x = 12,978,371,854.48
5. Step 5: Solve for x
   x = 12,978,371,854.48/131,789.96
6. Step 6: Final answer
   x = 98,477.70