Finding the Fourth Proportional to 89.42, 134.23 and 59.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89.42 : 134.23 = 59.12 : x
2. Step 2: Convert to fraction form
   89.42/134.23 = 59.12/x
3. Step 3: Cross multiply
   89.42x = 134.23 × 59.12
4. Step 4: Simplify right side
   89.42x = 7,935.68
5. Step 5: Solve for x
   x = 7,935.68/89.42
6. Step 6: Final answer
   x = 88.75