Finding the Fourth Proportional to 258,949.92, 388,128.42 and 108,965.46

Step by Step Solution

1. Step 1: Write the proportion equation
   258,949.92 : 388,128.42 = 108,965.46 : x
2. Step 2: Convert to fraction form
   258,949.92/388,128.42 = 108,965.46/x
3. Step 3: Cross multiply
   258,949.92x = 388,128.42 × 108,965.46
4. Step 4: Simplify right side
   258,949.92x = 42,292,591,824.37
5. Step 5: Solve for x
   x = 42,292,591,824.37/258,949.92
6. Step 6: Final answer
   x = 163,323.44