Finding the Fourth Proportional to 258,273.60, 387,348.72 and 108,516.72

Step by Step Solution

1. Step 1: Write the proportion equation
   258,273.60 : 387,348.72 = 108,516.72 : x
2. Step 2: Convert to fraction form
   258,273.60/387,348.72 = 108,516.72/x
3. Step 3: Cross multiply
   258,273.60x = 387,348.72 × 108,516.72
4. Step 4: Simplify right side
   258,273.60x = 42,033,812,590.60
5. Step 5: Solve for x
   x = 42,033,812,590.60/258,273.60
6. Step 6: Final answer
   x = 162,749.16