Finding the Fourth Proportional to 72.63, 108.84 and 67.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72.63 : 108.84 = 67.50 : x
2. Step 2: Convert to fraction form
   72.63/108.84 = 67.50/x
3. Step 3: Cross multiply
   72.63x = 108.84 × 67.50
4. Step 4: Simplify right side
   72.63x = 7,346.70
5. Step 5: Solve for x
   x = 7,346.70/72.63
6. Step 6: Final answer
   x = 101.15