Finding the Fourth Proportional to 111.62, 167.38 and 50.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111.62 : 167.38 = 50.72 : x
2. Step 2: Convert to fraction form
   111.62/167.38 = 50.72/x
3. Step 3: Cross multiply
   111.62x = 167.38 × 50.72
4. Step 4: Simplify right side
   111.62x = 8,489.51
5. Step 5: Solve for x
   x = 8,489.51/111.62
6. Step 6: Final answer
   x = 76.06