Finding the Fourth Proportional to 119.69, 179.52 and 100.55

Step by Step Solution

1. Step 1: Write the proportion equation
   119.69 : 179.52 = 100.55 : x
2. Step 2: Convert to fraction form
   119.69/179.52 = 100.55/x
3. Step 3: Cross multiply
   119.69x = 179.52 × 100.55
4. Step 4: Simplify right side
   119.69x = 18,049.84
5. Step 5: Solve for x
   x = 18,049.84/119.69
6. Step 6: Final answer
   x = 150.81