Finding the Fourth Proportional to 404,009.17, 557,507.61 and 222,711.73

Step by Step Solution

1. Step 1: Write the proportion equation
   404,009.17 : 557,507.61 = 222,711.73 : x
2. Step 2: Convert to fraction form
   404,009.17/557,507.61 = 222,711.73/x
3. Step 3: Cross multiply
   404,009.17x = 557,507.61 × 222,711.73
4. Step 4: Simplify right side
   404,009.17x = 124,163,482,917.50
5. Step 5: Solve for x
   x = 124,163,482,917.50/404,009.17
6. Step 6: Final answer
   x = 307,328.38