Finding the Fourth Proportional to 404,643.98, 558,408.72 and 223,355.96

Step by Step Solution

1. Step 1: Write the proportion equation
   404,643.98 : 558,408.72 = 223,355.96 : x
2. Step 2: Convert to fraction form
   404,643.98/558,408.72 = 223,355.96/x
3. Step 3: Cross multiply
   404,643.98x = 558,408.72 × 223,355.96
4. Step 4: Simplify right side
   404,643.98x = 124,723,912,935.93
5. Step 5: Solve for x
   x = 124,723,912,935.93/404,643.98
6. Step 6: Final answer
   x = 308,231.23