Finding the Fourth Proportional to 87,111.90, 120,251.20 and 58,855.86

Step by Step Solution

1. Step 1: Write the proportion equation
   87,111.90 : 120,251.20 = 58,855.86 : x
2. Step 2: Convert to fraction form
   87,111.90/120,251.20 = 58,855.86/x
3. Step 3: Cross multiply
   87,111.90x = 120,251.20 × 58,855.86
4. Step 4: Simplify right side
   87,111.90x = 7,077,487,792.03
5. Step 5: Solve for x
   x = 7,077,487,792.03/87,111.90
6. Step 6: Final answer
   x = 81,245.94