Finding the Fourth Proportional to 87,891.72, 131,727.93 and 42,875.97

Step by Step Solution

1. Step 1: Write the proportion equation
   87,891.72 : 131,727.93 = 42,875.97 : x
2. Step 2: Convert to fraction form
   87,891.72/131,727.93 = 42,875.97/x
3. Step 3: Cross multiply
   87,891.72x = 131,727.93 × 42,875.97
4. Step 4: Simplify right side
   87,891.72x = 5,647,962,774.84
5. Step 5: Solve for x
   x = 5,647,962,774.84/87,891.72
6. Step 6: Final answer
   x = 64,260.46