Finding the Fourth Proportional to 80,783.03, 111,408 and 50,571.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,783.03 : 111,408 = 50,571.10 : x
2. Step 2: Convert to fraction form
   80,783.03/111,408 = 50,571.10/x
3. Step 3: Cross multiply
   80,783.03x = 111,408 × 50,571.10
4. Step 4: Simplify right side
   80,783.03x = 5,634,025,108.80
5. Step 5: Solve for x
   x = 5,634,025,108.80/80,783.03
6. Step 6: Final answer
   x = 69,742.68