Finding the Fourth Proportional to 188.50, 282.72 and 111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   188.50 : 282.72 = 111.50 : x
2. Step 2: Convert to fraction form
   188.50/282.72 = 111.50/x
3. Step 3: Cross multiply
   188.50x = 282.72 × 111.50
4. Step 4: Simplify right side
   188.50x = 31,523.28
5. Step 5: Solve for x
   x = 31,523.28/188.50
6. Step 6: Final answer
   x = 167.23