Finding the Fourth Proportional to 108.50, 149.76 and 67.05

Step by Step Solution

1. Step 1: Write the proportion equation
   108.50 : 149.76 = 67.05 : x
2. Step 2: Convert to fraction form
   108.50/149.76 = 67.05/x
3. Step 3: Cross multiply
   108.50x = 149.76 × 67.05
4. Step 4: Simplify right side
   108.50x = 10,041.41
5. Step 5: Solve for x
   x = 10,041.41/108.50
6. Step 6: Final answer
   x = 92.55