Finding the Fourth Proportional to 59,131.87, 81,565.53 and 42,141.61

Step by Step Solution

1. Step 1: Write the proportion equation
   59,131.87 : 81,565.53 = 42,141.61 : x
2. Step 2: Convert to fraction form
   59,131.87/81,565.53 = 42,141.61/x
3. Step 3: Cross multiply
   59,131.87x = 81,565.53 × 42,141.61
4. Step 4: Simplify right side
   59,131.87x = 3,437,302,878.33
5. Step 5: Solve for x
   x = 3,437,302,878.33/59,131.87
6. Step 6: Final answer
   x = 58,129.45