Finding the Fourth Proportional to 404,066.88, 557,637.35 and 222,778.49

Step by Step Solution

1. Step 1: Write the proportion equation
   404,066.88 : 557,637.35 = 222,778.49 : x
2. Step 2: Convert to fraction form
   404,066.88/557,637.35 = 222,778.49/x
3. Step 3: Cross multiply
   404,066.88x = 557,637.35 × 222,778.49
4. Step 4: Simplify right side
   404,066.88x = 124,229,602,898.52
5. Step 5: Solve for x
   x = 124,229,602,898.52/404,066.88
6. Step 6: Final answer
   x = 307,448.12