Finding the Fourth Proportional to 73.18, 100.98 and 72.34

Step by Step Solution

1. Step 1: Write the proportion equation
   73.18 : 100.98 = 72.34 : x
2. Step 2: Convert to fraction form
   73.18/100.98 = 72.34/x
3. Step 3: Cross multiply
   73.18x = 100.98 × 72.34
4. Step 4: Simplify right side
   73.18x = 7,304.89
5. Step 5: Solve for x
   x = 7,304.89/73.18
6. Step 6: Final answer
   x = 99.82