Finding the Fourth Proportional to 404,672.15, 558,440.83 and 223,379.39

Step by Step Solution

1. Step 1: Write the proportion equation
   404,672.15 : 558,440.83 = 223,379.39 : x
2. Step 2: Convert to fraction form
   404,672.15/558,440.83 = 223,379.39/x
3. Step 3: Cross multiply
   404,672.15x = 558,440.83 × 223,379.39
4. Step 4: Simplify right side
   404,672.15x = 124,744,171,956.49
5. Step 5: Solve for x
   x = 124,744,171,956.49/404,672.15
6. Step 6: Final answer
   x = 308,259.84