Finding the Fourth Proportional to 111.50, 167.15 and 73.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111.50 : 167.15 = 73.06 : x
2. Step 2: Convert to fraction form
   111.50/167.15 = 73.06/x
3. Step 3: Cross multiply
   111.50x = 167.15 × 73.06
4. Step 4: Simplify right side
   111.50x = 12,211.98
5. Step 5: Solve for x
   x = 12,211.98/111.50
6. Step 6: Final answer
   x = 109.52