Finding the Fourth Proportional to 71.12, 106.61 and 50.83

Step by Step Solution

1. Step 1: Write the proportion equation
   71.12 : 106.61 = 50.83 : x
2. Step 2: Convert to fraction form
   71.12/106.61 = 50.83/x
3. Step 3: Cross multiply
   71.12x = 106.61 × 50.83
4. Step 4: Simplify right side
   71.12x = 5,418.47
5. Step 5: Solve for x
   x = 5,418.47/71.12
6. Step 6: Final answer
   x = 76.18