Finding the Fourth Proportional to 81,020.69, 111,777.37 and 50,753.33

Step by Step Solution

1. Step 1: Write the proportion equation
   81,020.69 : 111,777.37 = 50,753.33 : x
2. Step 2: Convert to fraction form
   81,020.69/111,777.37 = 50,753.33/x
3. Step 3: Cross multiply
   81,020.69x = 111,777.37 × 50,753.33
4. Step 4: Simplify right side
   81,020.69x = 5,673,072,933.49
5. Step 5: Solve for x
   x = 5,673,072,933.49/81,020.69
6. Step 6: Final answer
   x = 70,020.05