Finding the Fourth Proportional to 116.72, 161.82 and 109.73

Step by Step Solution

1. Step 1: Write the proportion equation
   116.72 : 161.82 = 109.73 : x
2. Step 2: Convert to fraction form
   116.72/161.82 = 109.73/x
3. Step 3: Cross multiply
   116.72x = 161.82 × 109.73
4. Step 4: Simplify right side
   116.72x = 17,756.77
5. Step 5: Solve for x
   x = 17,756.77/116.72
6. Step 6: Final answer
   x = 152.14