Finding the Fourth Proportional to 57.82, 86.17 and 56.09

Step by Step Solution

1. Step 1: Write the proportion equation
   57.82 : 86.17 = 56.09 : x
2. Step 2: Convert to fraction form
   57.82/86.17 = 56.09/x
3. Step 3: Cross multiply
   57.82x = 86.17 × 56.09
4. Step 4: Simplify right side
   57.82x = 4,833.28
5. Step 5: Solve for x
   x = 4,833.28/57.82
6. Step 6: Final answer
   x = 83.59