Finding the Fourth Proportional to 81,064.64, 111,871.08 and 50,851.23

Step by Step Solution

1. Step 1: Write the proportion equation
   81,064.64 : 111,871.08 = 50,851.23 : x
2. Step 2: Convert to fraction form
   81,064.64/111,871.08 = 50,851.23/x
3. Step 3: Cross multiply
   81,064.64x = 111,871.08 × 50,851.23
4. Step 4: Simplify right side
   81,064.64x = 5,688,782,019.43
5. Step 5: Solve for x
   x = 5,688,782,019.43/81,064.64
6. Step 6: Final answer
   x = 70,175.88