Finding the Fourth Proportional to 443,398.38, 611,854.92 and 249,797.55

Step by Step Solution

1. Step 1: Write the proportion equation
   443,398.38 : 611,854.92 = 249,797.55 : x
2. Step 2: Convert to fraction form
   443,398.38/611,854.92 = 249,797.55/x
3. Step 3: Cross multiply
   443,398.38x = 611,854.92 × 249,797.55
4. Step 4: Simplify right side
   443,398.38x = 152,839,859,971.45
5. Step 5: Solve for x
   x = 152,839,859,971.45/443,398.38
6. Step 6: Final answer
   x = 344,700.99