Finding the Fourth Proportional to 269,061.24, 402,969.78 and 259,730.04

Step by Step Solution

1. Step 1: Write the proportion equation
   269,061.24 : 402,969.78 = 259,730.04 : x
2. Step 2: Convert to fraction form
   269,061.24/402,969.78 = 259,730.04/x
3. Step 3: Cross multiply
   269,061.24x = 402,969.78 × 259,730.04
4. Step 4: Simplify right side
   269,061.24x = 104,663,357,078.19
5. Step 5: Solve for x
   x = 104,663,357,078.19/269,061.24
6. Step 6: Final answer
   x = 388,994.55