Finding the Fourth Proportional to 282,078.72, 389,279.52 and 154,759.68

Step by Step Solution

1. Step 1: Write the proportion equation
   282,078.72 : 389,279.52 = 154,759.68 : x
2. Step 2: Convert to fraction form
   282,078.72/389,279.52 = 154,759.68/x
3. Step 3: Cross multiply
   282,078.72x = 389,279.52 × 154,759.68
4. Step 4: Simplify right side
   282,078.72x = 60,244,773,945.75
5. Step 5: Solve for x
   x = 60,244,773,945.75/282,078.72
6. Step 6: Final answer
   x = 213,574.33