Finding the Fourth Proportional to 87,785.59, 121,143.25 and 47,498.47

Step by Step Solution

1. Step 1: Write the proportion equation
   87,785.59 : 121,143.25 = 47,498.47 : x
2. Step 2: Convert to fraction form
   87,785.59/121,143.25 = 47,498.47/x
3. Step 3: Cross multiply
   87,785.59x = 121,143.25 × 47,498.47
4. Step 4: Simplify right side
   87,785.59x = 5,754,119,025.83
5. Step 5: Solve for x
   x = 5,754,119,025.83/87,785.59
6. Step 6: Final answer
   x = 65,547.42