Finding the Fourth Proportional to 81,597.78, 112,609.04 and 50,989.37

Step by Step Solution

1. Step 1: Write the proportion equation
   81,597.78 : 112,609.04 = 50,989.37 : x
2. Step 2: Convert to fraction form
   81,597.78/112,609.04 = 50,989.37/x
3. Step 3: Cross multiply
   81,597.78x = 112,609.04 × 50,989.37
4. Step 4: Simplify right side
   81,597.78x = 5,741,863,187.91
5. Step 5: Solve for x
   x = 5,741,863,187.91/81,597.78
6. Step 6: Final answer
   x = 70,367.88