Finding the Fourth Proportional to 87,085.31, 120,214.46 and 58,829.27

Step by Step Solution

1. Step 1: Write the proportion equation
   87,085.31 : 120,214.46 = 58,829.27 : x
2. Step 2: Convert to fraction form
   87,085.31/120,214.46 = 58,829.27/x
3. Step 3: Cross multiply
   87,085.31x = 120,214.46 × 58,829.27
4. Step 4: Simplify right side
   87,085.31x = 7,072,128,471.25
5. Step 5: Solve for x
   x = 7,072,128,471.25/87,085.31
6. Step 6: Final answer
   x = 81,209.21