Finding the Fourth Proportional to 101.25, 139.59 and 73.58

Step by Step Solution

1. Step 1: Write the proportion equation
   101.25 : 139.59 = 73.58 : x
2. Step 2: Convert to fraction form
   101.25/139.59 = 73.58/x
3. Step 3: Cross multiply
   101.25x = 139.59 × 73.58
4. Step 4: Simplify right side
   101.25x = 10,270.33
5. Step 5: Solve for x
   x = 10,270.33/101.25
6. Step 6: Final answer
   x = 101.44