Finding the Fourth Proportional to 105.93, 158.94 and 89.00

Step by Step Solution

1. Step 1: Write the proportion equation
   105.93 : 158.94 = 89.00 : x
2. Step 2: Convert to fraction form
   105.93/158.94 = 89.00/x
3. Step 3: Cross multiply
   105.93x = 158.94 × 89.00
4. Step 4: Simplify right side
   105.93x = 14,145.21
5. Step 5: Solve for x
   x = 14,145.21/105.93
6. Step 6: Final answer
   x = 133.53