Finding the Fourth Proportional to 104.52, 155.69 and 100.68

Step by Step Solution

1. Step 1: Write the proportion equation
   104.52 : 155.69 = 100.68 : x
2. Step 2: Convert to fraction form
   104.52/155.69 = 100.68/x
3. Step 3: Cross multiply
   104.52x = 155.69 × 100.68
4. Step 4: Simplify right side
   104.52x = 15,674.16
5. Step 5: Solve for x
   x = 15,674.16/104.52
6. Step 6: Final answer
   x = 149.96