Finding the Fourth Proportional to 404,738.89, 558,540.50 and 223,451.17

Step by Step Solution

1. Step 1: Write the proportion equation
   404,738.89 : 558,540.50 = 223,451.17 : x
2. Step 2: Convert to fraction form
   404,738.89/558,540.50 = 223,451.17/x
3. Step 3: Cross multiply
   404,738.89x = 558,540.50 × 223,451.17
4. Step 4: Simplify right side
   404,738.89x = 124,806,524,307.43
5. Step 5: Solve for x
   x = 124,806,524,307.43/404,738.89
6. Step 6: Final answer
   x = 308,363.07