Finding the Fourth Proportional to 404,076.10, 557,628.90 and 222,795.10

Step by Step Solution

1. Step 1: Write the proportion equation
   404,076.10 : 557,628.90 = 222,795.10 : x
2. Step 2: Convert to fraction form
   404,076.10/557,628.90 = 222,795.10/x
3. Step 3: Cross multiply
   404,076.10x = 557,628.90 × 222,795.10
4. Step 4: Simplify right side
   404,076.10x = 124,236,986,538.39
5. Step 5: Solve for x
   x = 124,236,986,538.39/404,076.10
6. Step 6: Final answer
   x = 307,459.38