Finding the Fourth Proportional to 404,002.10, 557,526.78 and 222,721.10

Step by Step Solution

1. Step 1: Write the proportion equation
   404,002.10 : 557,526.78 = 222,721.10 : x
2. Step 2: Convert to fraction form
   404,002.10/557,526.78 = 222,721.10/x
3. Step 3: Cross multiply
   404,002.10x = 557,526.78 × 222,721.10
4. Step 4: Simplify right side
   404,002.10x = 124,172,977,721.06
5. Step 5: Solve for x
   x = 124,172,977,721.06/404,002.10
6. Step 6: Final answer
   x = 307,357.26