Finding the Fourth Proportional to 87,891.24, 131,727.18 and 42,875.48

Step by Step Solution

1. Step 1: Write the proportion equation
   87,891.24 : 131,727.18 = 42,875.48 : x
2. Step 2: Convert to fraction form
   87,891.24/131,727.18 = 42,875.48/x
3. Step 3: Cross multiply
   87,891.24x = 131,727.18 × 42,875.48
4. Step 4: Simplify right side
   87,891.24x = 5,647,866,071.55
5. Step 5: Solve for x
   x = 5,647,866,071.55/87,891.24
6. Step 6: Final answer
   x = 64,259.72