Finding the Fourth Proportional to 404,638.88, 558,401.72 and 223,350.88

Step by Step Solution

1. Step 1: Write the proportion equation
   404,638.88 : 558,401.72 = 223,350.88 : x
2. Step 2: Convert to fraction form
   404,638.88/558,401.72 = 223,350.88/x
3. Step 3: Cross multiply
   404,638.88x = 558,401.72 × 223,350.88
4. Step 4: Simplify right side
   404,638.88x = 124,719,515,555.51
5. Step 5: Solve for x
   x = 124,719,515,555.51/404,638.88
6. Step 6: Final answer
   x = 308,224.25