Finding the Fourth Proportional to 111.93, 167.75 and 100.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111.93 : 167.75 = 100.69 : x
2. Step 2: Convert to fraction form
   111.93/167.75 = 100.69/x
3. Step 3: Cross multiply
   111.93x = 167.75 × 100.69
4. Step 4: Simplify right side
   111.93x = 16,890.86
5. Step 5: Solve for x
   x = 16,890.86/111.93
6. Step 6: Final answer
   x = 150.90