Finding the Fourth Proportional to 443,078.50, 611,367.66 and 249,456.10

Step by Step Solution

1. Step 1: Write the proportion equation
   443,078.50 : 611,367.66 = 249,456.10 : x
2. Step 2: Convert to fraction form
   443,078.50/611,367.66 = 249,456.10/x
3. Step 3: Cross multiply
   443,078.50x = 611,367.66 × 249,456.10
4. Step 4: Simplify right side
   443,078.50x = 152,509,392,129.73
5. Step 5: Solve for x
   x = 152,509,392,129.73/443,078.50
6. Step 6: Final answer
   x = 344,204.00