Finding the Fourth Proportional to 101.39, 152.01 and 72.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101.39 : 152.01 = 72.50 : x
2. Step 2: Convert to fraction form
   101.39/152.01 = 72.50/x
3. Step 3: Cross multiply
   101.39x = 152.01 × 72.50
4. Step 4: Simplify right side
   101.39x = 11,019.96
5. Step 5: Solve for x
   x = 11,019.96/101.39
6. Step 6: Final answer
   x = 108.69