Finding the Fourth Proportional to 81,007.72, 111,860.96 and 50,845.32

Step by Step Solution

1. Step 1: Write the proportion equation
   81,007.72 : 111,860.96 = 50,845.32 : x
2. Step 2: Convert to fraction form
   81,007.72/111,860.96 = 50,845.32/x
3. Step 3: Cross multiply
   81,007.72x = 111,860.96 × 50,845.32
4. Step 4: Simplify right side
   81,007.72x = 5,687,606,306.71
5. Step 5: Solve for x
   x = 5,687,606,306.71/81,007.72
6. Step 6: Final answer
   x = 70,210.67