Finding the Fourth Proportional to 404,056.95, 557,596.20 and 222,768.15

Step by Step Solution

1. Step 1: Write the proportion equation
   404,056.95 : 557,596.20 = 222,768.15 : x
2. Step 2: Convert to fraction form
   404,056.95/557,596.20 = 222,768.15/x
3. Step 3: Cross multiply
   404,056.95x = 557,596.20 × 222,768.15
4. Step 4: Simplify right side
   404,056.95x = 124,214,673,921.03
5. Step 5: Solve for x
   x = 124,214,673,921.03/404,056.95
6. Step 6: Final answer
   x = 307,418.73