Finding the Fourth Proportional to 258,298.80, 387,501.39 and 108,450.96

Step by Step Solution

1. Step 1: Write the proportion equation
   258,298.80 : 387,501.39 = 108,450.96 : x
2. Step 2: Convert to fraction form
   258,298.80/387,501.39 = 108,450.96/x
3. Step 3: Cross multiply
   258,298.80x = 387,501.39 × 108,450.96
4. Step 4: Simplify right side
   258,298.80x = 42,024,897,746.83
5. Step 5: Solve for x
   x = 42,024,897,746.83/258,298.80
6. Step 6: Final answer
   x = 162,698.77