Finding the Fourth Proportional to 87,087.31, 120,217.22 and 58,831.27

Step by Step Solution

1. Step 1: Write the proportion equation
   87,087.31 : 120,217.22 = 58,831.27 : x
2. Step 2: Convert to fraction form
   87,087.31/120,217.22 = 58,831.27/x
3. Step 3: Cross multiply
   87,087.31x = 120,217.22 × 58,831.27
4. Step 4: Simplify right side
   87,087.31x = 7,072,531,728.47
5. Step 5: Solve for x
   x = 7,072,531,728.47/87,087.31
6. Step 6: Final answer
   x = 81,211.97