Finding the Fourth Proportional to 59.94, 82.82 and 57.81

Step by Step Solution

1. Step 1: Write the proportion equation
   59.94 : 82.82 = 57.81 : x
2. Step 2: Convert to fraction form
   59.94/82.82 = 57.81/x
3. Step 3: Cross multiply
   59.94x = 82.82 × 57.81
4. Step 4: Simplify right side
   59.94x = 4,787.82
5. Step 5: Solve for x
   x = 4,787.82/59.94
6. Step 6: Final answer
   x = 79.88