Finding the Fourth Proportional to 417,789.50, 576,488.68 and 238,906.94

Step by Step Solution

1. Step 1: Write the proportion equation
   417,789.50 : 576,488.68 = 238,906.94 : x
2. Step 2: Convert to fraction form
   417,789.50/576,488.68 = 238,906.94/x
3. Step 3: Cross multiply
   417,789.50x = 576,488.68 × 238,906.94
4. Step 4: Simplify right side
   417,789.50x = 137,727,143,003.73
5. Step 5: Solve for x
   x = 137,727,143,003.73/417,789.50
6. Step 6: Final answer
   x = 329,656.79