Finding the Fourth Proportional to 73.10, 100.72 and 48.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73.10 : 100.72 = 48.50 : x
2. Step 2: Convert to fraction form
   73.10/100.72 = 48.50/x
3. Step 3: Cross multiply
   73.10x = 100.72 × 48.50
4. Step 4: Simplify right side
   73.10x = 4,884.72
5. Step 5: Solve for x
   x = 4,884.72/73.10
6. Step 6: Final answer
   x = 66.82