Finding the Fourth Proportional to 88,167.56, 132,728.00 and 80,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,167.56 : 132,728.00 = 80,320.50 : x
2. Step 2: Convert to fraction form
   88,167.56/132,728.00 = 80,320.50/x
3. Step 3: Cross multiply
   88,167.56x = 132,728.00 × 80,320.50
4. Step 4: Simplify right side
   88,167.56x = 10,660,778,922.40
5. Step 5: Solve for x
   x = 10,660,778,922.40/88,167.56
6. Step 6: Final answer
   x = 120,914.99