Finding the Fourth Proportional to 88,697.60, 132,662.40 and 79,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   88,697.60 : 132,662.40 = 79,404.80 : x
2. Step 2: Convert to fraction form
   88,697.60/132,662.40 = 79,404.80/x
3. Step 3: Cross multiply
   88,697.60x = 132,662.40 × 79,404.80
4. Step 4: Simplify right side
   88,697.60x = 10,534,031,339.52
5. Step 5: Solve for x
   x = 10,534,031,339.52/88,697.60
6. Step 6: Final answer
   x = 118,763.43