Finding the Fourth Proportional to 497,022.48, 685,796.76 and 293,137.38

Step by Step Solution

1. Step 1: Write the proportion equation
   497,022.48 : 685,796.76 = 293,137.38 : x
2. Step 2: Convert to fraction form
   497,022.48/685,796.76 = 293,137.38/x
3. Step 3: Cross multiply
   497,022.48x = 685,796.76 × 293,137.38
4. Step 4: Simplify right side
   497,022.48x = 201,032,665,438.89
5. Step 5: Solve for x
   x = 201,032,665,438.89/497,022.48
6. Step 6: Final answer
   x = 404,473.99