Finding the Fourth Proportional to 71,887.55, 107,879.31 and 25,140.42

Step by Step Solution

1. Step 1: Write the proportion equation
   71,887.55 : 107,879.31 = 25,140.42 : x
2. Step 2: Convert to fraction form
   71,887.55/107,879.31 = 25,140.42/x
3. Step 3: Cross multiply
   71,887.55x = 107,879.31 × 25,140.42
4. Step 4: Simplify right side
   71,887.55x = 2,712,131,162.71
5. Step 5: Solve for x
   x = 2,712,131,162.71/71,887.55
6. Step 6: Final answer
   x = 37,727.41