Finding the Fourth Proportional to 87,691.38, 120,448.83 and 86,010.24

Step by Step Solution

1. Step 1: Write the proportion equation
   87,691.38 : 120,448.83 = 86,010.24 : x
2. Step 2: Convert to fraction form
   87,691.38/120,448.83 = 86,010.24/x
3. Step 3: Cross multiply
   87,691.38x = 120,448.83 × 86,010.24
4. Step 4: Simplify right side
   87,691.38x = 10,359,832,776.02
5. Step 5: Solve for x
   x = 10,359,832,776.02/87,691.38
6. Step 6: Final answer
   x = 118,139.69