Finding the Fourth Proportional to 418,498.38, 576,731.39 and 303,578.82

Step by Step Solution

1. Step 1: Write the proportion equation
   418,498.38 : 576,731.39 = 303,578.82 : x
2. Step 2: Convert to fraction form
   418,498.38/576,731.39 = 303,578.82/x
3. Step 3: Cross multiply
   418,498.38x = 576,731.39 × 303,578.82
4. Step 4: Simplify right side
   418,498.38x = 175,083,433,315.27
5. Step 5: Solve for x
   x = 175,083,433,315.27/418,498.38
6. Step 6: Final answer
   x = 418,361.08