Finding the Fourth Proportional to 105.25, 158.01 and 89.32

Step by Step Solution

1. Step 1: Write the proportion equation
   105.25 : 158.01 = 89.32 : x
2. Step 2: Convert to fraction form
   105.25/158.01 = 89.32/x
3. Step 3: Cross multiply
   105.25x = 158.01 × 89.32
4. Step 4: Simplify right side
   105.25x = 14,112.22
5. Step 5: Solve for x
   x = 14,112.22/105.25
6. Step 6: Final answer
   x = 134.09