Finding the Fourth Proportional to 87,238.88, 120,268.72 and 58,899.68

Step by Step Solution

1. Step 1: Write the proportion equation
   87,238.88 : 120,268.72 = 58,899.68 : x
2. Step 2: Convert to fraction form
   87,238.88/120,268.72 = 58,899.68/x
3. Step 3: Cross multiply
   87,238.88x = 120,268.72 × 58,899.68
4. Step 4: Simplify right side
   87,238.88x = 7,083,789,122.01
5. Step 5: Solve for x
   x = 7,083,789,122.01/87,238.88
6. Step 6: Final answer
   x = 81,199.91