Finding the Fourth Proportional to 111.52, 167.58 and 107.47

Step by Step Solution

1. Step 1: Write the proportion equation
   111.52 : 167.58 = 107.47 : x
2. Step 2: Convert to fraction form
   111.52/167.58 = 107.47/x
3. Step 3: Cross multiply
   111.52x = 167.58 × 107.47
4. Step 4: Simplify right side
   111.52x = 18,009.82
5. Step 5: Solve for x
   x = 18,009.82/111.52
6. Step 6: Final answer
   x = 161.49