Finding the Fourth Proportional to 258,644.34, 388,061.28 and 108,922.32

Step by Step Solution

1. Step 1: Write the proportion equation
   258,644.34 : 388,061.28 = 108,922.32 : x
2. Step 2: Convert to fraction form
   258,644.34/388,061.28 = 108,922.32/x
3. Step 3: Cross multiply
   258,644.34x = 388,061.28 × 108,922.32
4. Step 4: Simplify right side
   258,644.34x = 42,268,534,919.77
5. Step 5: Solve for x
   x = 42,268,534,919.77/258,644.34
6. Step 6: Final answer
   x = 163,423.39