Finding the Fourth Proportional to 108.73, 162.89 and 105.29

Step by Step Solution

1. Step 1: Write the proportion equation
   108.73 : 162.89 = 105.29 : x
2. Step 2: Convert to fraction form
   108.73/162.89 = 105.29/x
3. Step 3: Cross multiply
   108.73x = 162.89 × 105.29
4. Step 4: Simplify right side
   108.73x = 17,150.69
5. Step 5: Solve for x
   x = 17,150.69/108.73
6. Step 6: Final answer
   x = 157.74