Finding the Fourth Proportional to 89.34, 134.01 and 28.48

Step by Step Solution

1. Step 1: Write the proportion equation
   89.34 : 134.01 = 28.48 : x
2. Step 2: Convert to fraction form
   89.34/134.01 = 28.48/x
3. Step 3: Cross multiply
   89.34x = 134.01 × 28.48
4. Step 4: Simplify right side
   89.34x = 3,816.16
5. Step 5: Solve for x
   x = 3,816.16/89.34
6. Step 6: Final answer
   x = 42.71