Finding the Fourth Proportional to 404,942.20, 558,882.33 and 249,983.74

Step by Step Solution

1. Step 1: Write the proportion equation
   404,942.20 : 558,882.33 = 249,983.74 : x
2. Step 2: Convert to fraction form
   404,942.20/558,882.33 = 249,983.74/x
3. Step 3: Cross multiply
   404,942.20x = 558,882.33 × 249,983.74
4. Step 4: Simplify right side
   404,942.20x = 139,711,495,073.31
5. Step 5: Solve for x
   x = 139,711,495,073.31/404,942.20
6. Step 6: Final answer
   x = 345,015.89