Finding the Fourth Proportional to 107.06, 147.69 and 72.50

Step by Step Solution

1. Step 1: Write the proportion equation
   107.06 : 147.69 = 72.50 : x
2. Step 2: Convert to fraction form
   107.06/147.69 = 72.50/x
3. Step 3: Cross multiply
   107.06x = 147.69 × 72.50
4. Step 4: Simplify right side
   107.06x = 10,707.53
5. Step 5: Solve for x
   x = 10,707.53/107.06
6. Step 6: Final answer
   x = 100.01