Finding the Fourth Proportional to 87,754.91, 131,643.30 and 28,574.69

Step by Step Solution

1. Step 1: Write the proportion equation
   87,754.91 : 131,643.30 = 28,574.69 : x
2. Step 2: Convert to fraction form
   87,754.91/131,643.30 = 28,574.69/x
3. Step 3: Cross multiply
   87,754.91x = 131,643.30 × 28,574.69
4. Step 4: Simplify right side
   87,754.91x = 3,761,665,829.86
5. Step 5: Solve for x
   x = 3,761,665,829.86/87,754.91
6. Step 6: Final answer
   x = 42,865.59