Finding the Fourth Proportional to 89.57, 134.13 and 59.05

Step by Step Solution

1. Step 1: Write the proportion equation
   89.57 : 134.13 = 59.05 : x
2. Step 2: Convert to fraction form
   89.57/134.13 = 59.05/x
3. Step 3: Cross multiply
   89.57x = 134.13 × 59.05
4. Step 4: Simplify right side
   89.57x = 7,920.38
5. Step 5: Solve for x
   x = 7,920.38/89.57
6. Step 6: Final answer
   x = 88.43