Finding the Fourth Proportional to 112.50, 168.71 and 63.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112.50 : 168.71 = 63.72 : x
2. Step 2: Convert to fraction form
   112.50/168.71 = 63.72/x
3. Step 3: Cross multiply
   112.50x = 168.71 × 63.72
4. Step 4: Simplify right side
   112.50x = 10,749.88
5. Step 5: Solve for x
   x = 10,749.88/112.50
6. Step 6: Final answer
   x = 95.55