Finding the Fourth Proportional to 485,369.89, 728,382.89 and 169,829.53

Step by Step Solution

1. Step 1: Write the proportion equation
   485,369.89 : 728,382.89 = 169,829.53 : x
2. Step 2: Convert to fraction form
   485,369.89/728,382.89 = 169,829.53/x
3. Step 3: Cross multiply
   485,369.89x = 728,382.89 × 169,829.53
4. Step 4: Simplify right side
   485,369.89x = 123,700,923,019.59
5. Step 5: Solve for x
   x = 123,700,923,019.59/485,369.89
6. Step 6: Final answer
   x = 254,859.08