Finding the Fourth Proportional to 403,932.54, 557,401.56 and 222,634.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,932.54 : 557,401.56 = 222,634.50 : x
2. Step 2: Convert to fraction form
   403,932.54/557,401.56 = 222,634.50/x
3. Step 3: Cross multiply
   403,932.54x = 557,401.56 × 222,634.50
4. Step 4: Simplify right side
   403,932.54x = 124,096,814,822.81
5. Step 5: Solve for x
   x = 124,096,814,822.81/403,932.54
6. Step 6: Final answer
   x = 307,221.63