Finding the Fourth Proportional to 59.39, 89.12 and 53.97

Step by Step Solution

1. Step 1: Write the proportion equation
   59.39 : 89.12 = 53.97 : x
2. Step 2: Convert to fraction form
   59.39/89.12 = 53.97/x
3. Step 3: Cross multiply
   59.39x = 89.12 × 53.97
4. Step 4: Simplify right side
   59.39x = 4,809.81
5. Step 5: Solve for x
   x = 4,809.81/59.39
6. Step 6: Final answer
   x = 80.99