Finding the Fourth Proportional to 111.82, 167.72 and 47.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111.82 : 167.72 = 47.69 : x
2. Step 2: Convert to fraction form
   111.82/167.72 = 47.69/x
3. Step 3: Cross multiply
   111.82x = 167.72 × 47.69
4. Step 4: Simplify right side
   111.82x = 7,998.57
5. Step 5: Solve for x
   x = 7,998.57/111.82
6. Step 6: Final answer
   x = 71.53