Finding the Fourth Proportional to 89.99, 134.89 and 32.16

Step by Step Solution

1. Step 1: Write the proportion equation
   89.99 : 134.89 = 32.16 : x
2. Step 2: Convert to fraction form
   89.99/134.89 = 32.16/x
3. Step 3: Cross multiply
   89.99x = 134.89 × 32.16
4. Step 4: Simplify right side
   89.99x = 4,338.49
5. Step 5: Solve for x
   x = 4,338.49/89.99
6. Step 6: Final answer
   x = 48.21