Finding the Fourth Proportional to 258,490.50, 387,763.56 and 108,746.04

Step by Step Solution

1. Step 1: Write the proportion equation
   258,490.50 : 387,763.56 = 108,746.04 : x
2. Step 2: Convert to fraction form
   258,490.50/387,763.56 = 108,746.04/x
3. Step 3: Cross multiply
   258,490.50x = 387,763.56 × 108,746.04
4. Step 4: Simplify right side
   258,490.50x = 42,167,751,606.30
5. Step 5: Solve for x
   x = 42,167,751,606.30/258,490.50
6. Step 6: Final answer
   x = 163,130.76