Finding the Fourth Proportional to 258,645.34, 388,062.78 and 108,923.32

Step by Step Solution

1. Step 1: Write the proportion equation
   258,645.34 : 388,062.78 = 108,923.32 : x
2. Step 2: Convert to fraction form
   258,645.34/388,062.78 = 108,923.32/x
3. Step 3: Cross multiply
   258,645.34x = 388,062.78 × 108,923.32
4. Step 4: Simplify right side
   258,645.34x = 42,269,086,366.03
5. Step 5: Solve for x
   x = 42,269,086,366.03/258,645.34
6. Step 6: Final answer
   x = 163,424.89