Finding the Fourth Proportional to 88,719.60, 132,695.40 and 79,426.80

Step by Step Solution

1. Step 1: Write the proportion equation
   88,719.60 : 132,695.40 = 79,426.80 : x
2. Step 2: Convert to fraction form
   88,719.60/132,695.40 = 79,426.80/x
3. Step 3: Cross multiply
   88,719.60x = 132,695.40 × 79,426.80
4. Step 4: Simplify right side
   88,719.60x = 10,539,570,996.72
5. Step 5: Solve for x
   x = 10,539,570,996.72/88,719.60
6. Step 6: Final answer
   x = 118,796.42