Finding the Fourth Proportional to 404,069.38, 557,619.69 and 222,787.78

Step by Step Solution

1. Step 1: Write the proportion equation
   404,069.38 : 557,619.69 = 222,787.78 : x
2. Step 2: Convert to fraction form
   404,069.38/557,619.69 = 222,787.78/x
3. Step 3: Cross multiply
   404,069.38x = 557,619.69 × 222,787.78
4. Step 4: Simplify right side
   404,069.38x = 124,230,852,819.39
5. Step 5: Solve for x
   x = 124,230,852,819.39/404,069.38
6. Step 6: Final answer
   x = 307,449.31