Finding the Fourth Proportional to 108.91, 151.06 and 105.94

Step by Step Solution

1. Step 1: Write the proportion equation
   108.91 : 151.06 = 105.94 : x
2. Step 2: Convert to fraction form
   108.91/151.06 = 105.94/x
3. Step 3: Cross multiply
   108.91x = 151.06 × 105.94
4. Step 4: Simplify right side
   108.91x = 16,003.30
5. Step 5: Solve for x
   x = 16,003.30/108.91
6. Step 6: Final answer
   x = 146.94