Finding the Fourth Proportional to 298,458.72, 411,847.92 and 171,105.12

Step by Step Solution

1. Step 1: Write the proportion equation
   298,458.72 : 411,847.92 = 171,105.12 : x
2. Step 2: Convert to fraction form
   298,458.72/411,847.92 = 171,105.12/x
3. Step 3: Cross multiply
   298,458.72x = 411,847.92 × 171,105.12
4. Step 4: Simplify right side
   298,458.72x = 70,469,287,773.35
5. Step 5: Solve for x
   x = 70,469,287,773.35/298,458.72
6. Step 6: Final answer
   x = 236,110.67