Finding the Fourth Proportional to 408,100.91, 612,152.79 and 123,793.91

Step by Step Solution

1. Step 1: Write the proportion equation
   408,100.91 : 612,152.79 = 123,793.91 : x
2. Step 2: Convert to fraction form
   408,100.91/612,152.79 = 123,793.91/x
3. Step 3: Cross multiply
   408,100.91x = 612,152.79 × 123,793.91
4. Step 4: Simplify right side
   408,100.91x = 75,780,788,921.89
5. Step 5: Solve for x
   x = 75,780,788,921.89/408,100.91
6. Step 6: Final answer
   x = 185,691.30