Finding the Fourth Proportional to 111.69, 167.71 and 100.52

Step by Step Solution

1. Step 1: Write the proportion equation
   111.69 : 167.71 = 100.52 : x
2. Step 2: Convert to fraction form
   111.69/167.71 = 100.52/x
3. Step 3: Cross multiply
   111.69x = 167.71 × 100.52
4. Step 4: Simplify right side
   111.69x = 16,857.37
5. Step 5: Solve for x
   x = 16,857.37/111.69
6. Step 6: Final answer
   x = 150.94