Finding the Fourth Proportional to 116.27, 160.06 and 100.67

Step by Step Solution

1. Step 1: Write the proportion equation
   116.27 : 160.06 = 100.67 : x
2. Step 2: Convert to fraction form
   116.27/160.06 = 100.67/x
3. Step 3: Cross multiply
   116.27x = 160.06 × 100.67
4. Step 4: Simplify right side
   116.27x = 16,112.74
5. Step 5: Solve for x
   x = 16,112.74/116.27
6. Step 6: Final answer
   x = 138.59