Finding the Fourth Proportional to 71.58, 107.37 and 50.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71.58 : 107.37 = 50.34 : x
2. Step 2: Convert to fraction form
   71.58/107.37 = 50.34/x
3. Step 3: Cross multiply
   71.58x = 107.37 × 50.34
4. Step 4: Simplify right side
   71.58x = 5,405.01
5. Step 5: Solve for x
   x = 5,405.01/71.58
6. Step 6: Final answer
   x = 75.51