Finding the Fourth Proportional to 404,172.52, 557,760.72 and 222,891.28

Step by Step Solution

1. Step 1: Write the proportion equation
   404,172.52 : 557,760.72 = 222,891.28 : x
2. Step 2: Convert to fraction form
   404,172.52/557,760.72 = 222,891.28/x
3. Step 3: Cross multiply
   404,172.52x = 557,760.72 × 222,891.28
4. Step 4: Simplify right side
   404,172.52x = 124,320,000,814.52
5. Step 5: Solve for x
   x = 124,320,000,814.52/404,172.52
6. Step 6: Final answer
   x = 307,591.42