Finding the Fourth Proportional to 107.32, 147.98 and 72.34

Step by Step Solution

1. Step 1: Write the proportion equation
   107.32 : 147.98 = 72.34 : x
2. Step 2: Convert to fraction form
   107.32/147.98 = 72.34/x
3. Step 3: Cross multiply
   107.32x = 147.98 × 72.34
4. Step 4: Simplify right side
   107.32x = 10,704.87
5. Step 5: Solve for x
   x = 10,704.87/107.32
6. Step 6: Final answer
   x = 99.75