Finding the Fourth Proportional to 99.32, 148.82 and 72.14

Step by Step Solution

1. Step 1: Write the proportion equation
   99.32 : 148.82 = 72.14 : x
2. Step 2: Convert to fraction form
   99.32/148.82 = 72.14/x
3. Step 3: Cross multiply
   99.32x = 148.82 × 72.14
4. Step 4: Simplify right side
   99.32x = 10,735.87
5. Step 5: Solve for x
   x = 10,735.87/99.32
6. Step 6: Final answer
   x = 108.09