Finding the Fourth Proportional to 104.50, 155.69 and 99.33

Step by Step Solution

1. Step 1: Write the proportion equation
   104.50 : 155.69 = 99.33 : x
2. Step 2: Convert to fraction form
   104.50/155.69 = 99.33/x
3. Step 3: Cross multiply
   104.50x = 155.69 × 99.33
4. Step 4: Simplify right side
   104.50x = 15,464.96
5. Step 5: Solve for x
   x = 15,464.96/104.50
6. Step 6: Final answer
   x = 147.99