Finding the Fourth Proportional to 404,019.42, 557,550.72 and 222,738.60

Step by Step Solution

1. Step 1: Write the proportion equation
   404,019.42 : 557,550.72 = 222,738.60 : x
2. Step 2: Convert to fraction form
   404,019.42/557,550.72 = 222,738.60/x
3. Step 3: Cross multiply
   404,019.42x = 557,550.72 × 222,738.60
4. Step 4: Simplify right side
   404,019.42x = 124,188,066,801.79
5. Step 5: Solve for x
   x = 124,188,066,801.79/404,019.42
6. Step 6: Final answer
   x = 307,381.43