Finding the Fourth Proportional to 88,449.27, 132,766.25 and 77,987.31

Step by Step Solution

1. Step 1: Write the proportion equation
   88,449.27 : 132,766.25 = 77,987.31 : x
2. Step 2: Convert to fraction form
   88,449.27/132,766.25 = 77,987.31/x
3. Step 3: Cross multiply
   88,449.27x = 132,766.25 × 77,987.31
4. Step 4: Simplify right side
   88,449.27x = 10,354,082,306.35
5. Step 5: Solve for x
   x = 10,354,082,306.35/88,449.27
6. Step 6: Final answer
   x = 117,062.38