Finding the Fourth Proportional to 72.01, 107.75 and 50.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72.01 : 107.75 = 50.59 : x
2. Step 2: Convert to fraction form
   72.01/107.75 = 50.59/x
3. Step 3: Cross multiply
   72.01x = 107.75 × 50.59
4. Step 4: Simplify right side
   72.01x = 5,450.82
5. Step 5: Solve for x
   x = 5,450.82/72.01
6. Step 6: Final answer
   x = 75.70