Finding the Fourth Proportional to 101.42, 139.82 and 73.82

Step by Step Solution

1. Step 1: Write the proportion equation
   101.42 : 139.82 = 73.82 : x
2. Step 2: Convert to fraction form
   101.42/139.82 = 73.82/x
3. Step 3: Cross multiply
   101.42x = 139.82 × 73.82
4. Step 4: Simplify right side
   101.42x = 10,320.44
5. Step 5: Solve for x
   x = 10,320.44/101.42
6. Step 6: Final answer
   x = 101.76