Finding the Fourth Proportional to 404,658.84, 558,429.31 and 223,370.89

Step by Step Solution

1. Step 1: Write the proportion equation
   404,658.84 : 558,429.31 = 223,370.89 : x
2. Step 2: Convert to fraction form
   404,658.84/558,429.31 = 223,370.89/x
3. Step 3: Cross multiply
   404,658.84x = 558,429.31 × 223,370.89
4. Step 4: Simplify right side
   404,658.84x = 124,736,849,184.64
5. Step 5: Solve for x
   x = 124,736,849,184.64/404,658.84
6. Step 6: Final answer
   x = 308,251.88