Finding the Fourth Proportional to 404,066.88, 557,616.24 and 222,785.28

Step by Step Solution

1. Step 1: Write the proportion equation
   404,066.88 : 557,616.24 = 222,785.28 : x
2. Step 2: Convert to fraction form
   404,066.88/557,616.24 = 222,785.28/x
3. Step 3: Cross multiply
   404,066.88x = 557,616.24 × 222,785.28
4. Step 4: Simplify right side
   404,066.88x = 124,228,690,160.95
5. Step 5: Solve for x
   x = 124,228,690,160.95/404,066.88
6. Step 6: Final answer
   x = 307,445.86