Finding the Fourth Proportional to 80,911.33, 111,611.91 and 50,644.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,911.33 : 111,611.91 = 50,644.10 : x
2. Step 2: Convert to fraction form
   80,911.33/111,611.91 = 50,644.10/x
3. Step 3: Cross multiply
   80,911.33x = 111,611.91 × 50,644.10
4. Step 4: Simplify right side
   80,911.33x = 5,652,485,364.39
5. Step 5: Solve for x
   x = 5,652,485,364.39/80,911.33
6. Step 6: Final answer
   x = 69,860.25