Finding the Fourth Proportional to 404,000.10, 557,524.02 and 222,719.10

Step by Step Solution

1. Step 1: Write the proportion equation
   404,000.10 : 557,524.02 = 222,719.10 : x
2. Step 2: Convert to fraction form
   404,000.10/557,524.02 = 222,719.10/x
3. Step 3: Cross multiply
   404,000.10x = 557,524.02 × 222,719.10
4. Step 4: Simplify right side
   404,000.10x = 124,171,247,962.78
5. Step 5: Solve for x
   x = 124,171,247,962.78/404,000.10
6. Step 6: Final answer
   x = 307,354.50