Finding the Fourth Proportional to 501,857.10, 691,605.69 and 492,632.82

Step by Step Solution

1. Step 1: Write the proportion equation
   501,857.10 : 691,605.69 = 492,632.82 : x
2. Step 2: Convert to fraction form
   501,857.10/691,605.69 = 492,632.82/x
3. Step 3: Cross multiply
   501,857.10x = 691,605.69 × 492,632.82
4. Step 4: Simplify right side
   501,857.10x = 340,707,661,392.75
5. Step 5: Solve for x
   x = 340,707,661,392.75/501,857.10
6. Step 6: Final answer
   x = 678,893.78