Finding the Fourth Proportional to 87,131.80, 130,645.00 and 39,091.61

Step by Step Solution

1. Step 1: Write the proportion equation
   87,131.80 : 130,645.00 = 39,091.61 : x
2. Step 2: Convert to fraction form
   87,131.80/130,645.00 = 39,091.61/x
3. Step 3: Cross multiply
   87,131.80x = 130,645.00 × 39,091.61
4. Step 4: Simplify right side
   87,131.80x = 5,107,123,763.93
5. Step 5: Solve for x
   x = 5,107,123,763.93/87,131.80
6. Step 6: Final answer
   x = 58,613.77