Finding the Fourth Proportional to 111.34, 167.50 and 93.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111.34 : 167.50 = 93.12 : x
2. Step 2: Convert to fraction form
   111.34/167.50 = 93.12/x
3. Step 3: Cross multiply
   111.34x = 167.50 × 93.12
4. Step 4: Simplify right side
   111.34x = 15,597.60
5. Step 5: Solve for x
   x = 15,597.60/111.34
6. Step 6: Final answer
   x = 140.09