Finding the Fourth Proportional to 171,175.72, 256,788.18 and 52,856.20

Step by Step Solution

1. Step 1: Write the proportion equation
   171,175.72 : 256,788.18 = 52,856.20 : x
2. Step 2: Convert to fraction form
   171,175.72/256,788.18 = 52,856.20/x
3. Step 3: Cross multiply
   171,175.72x = 256,788.18 × 52,856.20
4. Step 4: Simplify right side
   171,175.72x = 13,572,847,399.72
5. Step 5: Solve for x
   x = 13,572,847,399.72/171,175.72
6. Step 6: Final answer
   x = 79,291.90