Finding the Fourth Proportional to 404,144.96, 557,707.84 and 222,856.80

Step by Step Solution

1. Step 1: Write the proportion equation
   404,144.96 : 557,707.84 = 222,856.80 : x
2. Step 2: Convert to fraction form
   404,144.96/557,707.84 = 222,856.80/x
3. Step 3: Cross multiply
   404,144.96x = 557,707.84 × 222,856.80
4. Step 4: Simplify right side
   404,144.96x = 124,288,984,557.31
5. Step 5: Solve for x
   x = 124,288,984,557.31/404,144.96
6. Step 6: Final answer
   x = 307,535.65