Finding the Fourth Proportional to 259,441.07, 389,173.27 and 79,513.32

Step by Step Solution

1. Step 1: Write the proportion equation
   259,441.07 : 389,173.27 = 79,513.32 : x
2. Step 2: Convert to fraction form
   259,441.07/389,173.27 = 79,513.32/x
3. Step 3: Cross multiply
   259,441.07x = 389,173.27 × 79,513.32
4. Step 4: Simplify right side
   259,441.07x = 30,944,456,409.52
5. Step 5: Solve for x
   x = 30,944,456,409.52/259,441.07
6. Step 6: Final answer
   x = 119,273.55