Finding the Fourth Proportional to 59, 80.89 and 57.98

Step by Step Solution

1. Step 1: Write the proportion equation
   59 : 80.89 = 57.98 : x
2. Step 2: Convert to fraction form
   59/80.89 = 57.98/x
3. Step 3: Cross multiply
   59x = 80.89 × 57.98
4. Step 4: Simplify right side
   59x = 4,689.31
5. Step 5: Solve for x
   x = 4,689.31/59
6. Step 6: Final answer
   x = 79.48