Finding the Fourth Proportional to 404,046.72, 557,588.34 and 222,765.12

Step by Step Solution

1. Step 1: Write the proportion equation
   404,046.72 : 557,588.34 = 222,765.12 : x
2. Step 2: Convert to fraction form
   404,046.72/557,588.34 = 222,765.12/x
3. Step 3: Cross multiply
   404,046.72x = 557,588.34 × 222,765.12
4. Step 4: Simplify right side
   404,046.72x = 124,211,233,470.70
5. Step 5: Solve for x
   x = 124,211,233,470.70/404,046.72
6. Step 6: Final answer
   x = 307,418.00