Finding the Fourth Proportional to 404,151.15, 557,742.06 and 220,399.78

Step by Step Solution

1. Step 1: Write the proportion equation
   404,151.15 : 557,742.06 = 220,399.78 : x
2. Step 2: Convert to fraction form
   404,151.15/557,742.06 = 220,399.78/x
3. Step 3: Cross multiply
   404,151.15x = 557,742.06 × 220,399.78
4. Step 4: Simplify right side
   404,151.15x = 122,926,226,023.38
5. Step 5: Solve for x
   x = 122,926,226,023.38/404,151.15
6. Step 6: Final answer
   x = 304,159.04