Finding the Fourth Proportional to 121,340.79, 181,061.92 and 108,732.42

Step by Step Solution

1. Step 1: Write the proportion equation
   121,340.79 : 181,061.92 = 108,732.42 : x
2. Step 2: Convert to fraction form
   121,340.79/181,061.92 = 108,732.42/x
3. Step 3: Cross multiply
   121,340.79x = 181,061.92 × 108,732.42
4. Step 4: Simplify right side
   121,340.79x = 19,687,300,731.45
5. Step 5: Solve for x
   x = 19,687,300,731.45/121,340.79
6. Step 6: Final answer
   x = 162,248.00