Finding the Fourth Proportional to 101.34, 139.86 and 75.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101.34 : 139.86 = 75.42 : x
2. Step 2: Convert to fraction form
   101.34/139.86 = 75.42/x
3. Step 3: Cross multiply
   101.34x = 139.86 × 75.42
4. Step 4: Simplify right side
   101.34x = 10,548.24
5. Step 5: Solve for x
   x = 10,548.24/101.34
6. Step 6: Final answer
   x = 104.09