Finding the Fourth Proportional to 792,105.30, 1,188,147.15 and 259,643.70

Step by Step Solution

1. Step 1: Write the proportion equation
   792,105.30 : 1,188,147.15 = 259,643.70 : x
2. Step 2: Convert to fraction form
   792,105.30/1,188,147.15 = 259,643.70/x
3. Step 3: Cross multiply
   792,105.30x = 1,188,147.15 × 259,643.70
4. Step 4: Simplify right side
   792,105.30x = 308,494,922,170.46
5. Step 5: Solve for x
   x = 308,494,922,170.46/792,105.30
6. Step 6: Final answer
   x = 389,462.01