Finding the Fourth Proportional to 404,608.50, 558,359.73 and 225,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,608.50 : 558,359.73 = 225,760.50 : x
2. Step 2: Convert to fraction form
   404,608.50/558,359.73 = 225,760.50/x
3. Step 3: Cross multiply
   404,608.50x = 558,359.73 × 225,760.50
4. Step 4: Simplify right side
   404,608.50x = 126,055,571,824.67
5. Step 5: Solve for x
   x = 126,055,571,824.67/404,608.50
6. Step 6: Final answer
   x = 311,549.49