Finding the Fourth Proportional to 88,662.78, 133,056.54 and 80,192.88

Step by Step Solution

1. Step 1: Write the proportion equation
   88,662.78 : 133,056.54 = 80,192.88 : x
2. Step 2: Convert to fraction form
   88,662.78/133,056.54 = 80,192.88/x
3. Step 3: Cross multiply
   88,662.78x = 133,056.54 × 80,192.88
4. Step 4: Simplify right side
   88,662.78x = 10,670,187,145.44
5. Step 5: Solve for x
   x = 10,670,187,145.44/88,662.78
6. Step 6: Final answer
   x = 120,345.73