Finding the Fourth Proportional to 59.18, 81.72 and 39.82

Step by Step Solution

1. Step 1: Write the proportion equation
   59.18 : 81.72 = 39.82 : x
2. Step 2: Convert to fraction form
   59.18/81.72 = 39.82/x
3. Step 3: Cross multiply
   59.18x = 81.72 × 39.82
4. Step 4: Simplify right side
   59.18x = 3,254.09
5. Step 5: Solve for x
   x = 3,254.09/59.18
6. Step 6: Final answer
   x = 54.99