Finding the Fourth Proportional to 70.73, 105.94 and 50.43

Step by Step Solution

1. Step 1: Write the proportion equation
   70.73 : 105.94 = 50.43 : x
2. Step 2: Convert to fraction form
   70.73/105.94 = 50.43/x
3. Step 3: Cross multiply
   70.73x = 105.94 × 50.43
4. Step 4: Simplify right side
   70.73x = 5,343.01
5. Step 5: Solve for x
   x = 5,343.01/70.73
6. Step 6: Final answer
   x = 75.54