Finding the Fourth Proportional to 88,081.60, 132,381.60 and 76,676.80

Step by Step Solution

1. Step 1: Write the proportion equation
   88,081.60 : 132,381.60 = 76,676.80 : x
2. Step 2: Convert to fraction form
   88,081.60/132,381.60 = 76,676.80/x
3. Step 3: Cross multiply
   88,081.60x = 132,381.60 × 76,676.80
4. Step 4: Simplify right side
   88,081.60x = 10,150,597,466.88
5. Step 5: Solve for x
   x = 10,150,597,466.88/88,081.60
6. Step 6: Final answer
   x = 115,240.84