Finding the Fourth Proportional to 298,057.72, 411,285.18 and 170,725.72

Step by Step Solution

1. Step 1: Write the proportion equation
   298,057.72 : 411,285.18 = 170,725.72 : x
2. Step 2: Convert to fraction form
   298,057.72/411,285.18 = 170,725.72/x
3. Step 3: Cross multiply
   298,057.72x = 411,285.18 × 170,725.72
4. Step 4: Simplify right side
   298,057.72x = 70,216,958,480.83
5. Step 5: Solve for x
   x = 70,216,958,480.83/298,057.72
6. Step 6: Final answer
   x = 235,581.75