Finding the Fourth Proportional to 87,258.52, 120,477.54 and 58,621.78

Step by Step Solution

1. Step 1: Write the proportion equation
   87,258.52 : 120,477.54 = 58,621.78 : x
2. Step 2: Convert to fraction form
   87,258.52/120,477.54 = 58,621.78/x
3. Step 3: Cross multiply
   87,258.52x = 120,477.54 × 58,621.78
4. Step 4: Simplify right side
   87,258.52x = 7,062,607,844.82
5. Step 5: Solve for x
   x = 7,062,607,844.82/87,258.52
6. Step 6: Final answer
   x = 80,938.89