Finding the Fourth Proportional to 418,046.56, 576,819.56 and 254,593.50

Step by Step Solution

1. Step 1: Write the proportion equation
   418,046.56 : 576,819.56 = 254,593.50 : x
2. Step 2: Convert to fraction form
   418,046.56/576,819.56 = 254,593.50/x
3. Step 3: Cross multiply
   418,046.56x = 576,819.56 × 254,593.50
4. Step 4: Simplify right side
   418,046.56x = 146,854,510,648.86
5. Step 5: Solve for x
   x = 146,854,510,648.86/418,046.56
6. Step 6: Final answer
   x = 351,287.45