Finding the Fourth Proportional to 260,016.89, 389,359.49 and 179,943.99

Step by Step Solution

1. Step 1: Write the proportion equation
   260,016.89 : 389,359.49 = 179,943.99 : x
2. Step 2: Convert to fraction form
   260,016.89/389,359.49 = 179,943.99/x
3. Step 3: Cross multiply
   260,016.89x = 389,359.49 × 179,943.99
4. Step 4: Simplify right side
   260,016.89x = 70,062,899,275.25
5. Step 5: Solve for x
   x = 70,062,899,275.25/260,016.89
6. Step 6: Final answer
   x = 269,455.19