Finding the Fourth Proportional to 423,648.50, 584,686.78 and 244,800.50

Step by Step Solution

1. Step 1: Write the proportion equation
   423,648.50 : 584,686.78 = 244,800.50 : x
2. Step 2: Convert to fraction form
   423,648.50/584,686.78 = 244,800.50/x
3. Step 3: Cross multiply
   423,648.50x = 584,686.78 × 244,800.50
4. Step 4: Simplify right side
   423,648.50x = 143,131,616,087.39
5. Step 5: Solve for x
   x = 143,131,616,087.39/423,648.50
6. Step 6: Final answer
   x = 337,854.65