Finding the Fourth Proportional to 154,766.52, 231,838.74 and 80,739

Step by Step Solution

1. Step 1: Write the proportion equation
   154,766.52 : 231,838.74 = 80,739 : x
2. Step 2: Convert to fraction form
   154,766.52/231,838.74 = 80,739/x
3. Step 3: Cross multiply
   154,766.52x = 231,838.74 × 80,739
4. Step 4: Simplify right side
   154,766.52x = 18,718,428,028.86
5. Step 5: Solve for x
   x = 18,718,428,028.86/154,766.52
6. Step 6: Final answer
   x = 120,946.24