Finding the Fourth Proportional to 81,065.38, 111,872.12 and 50,851.98

Step by Step Solution

1. Step 1: Write the proportion equation
   81,065.38 : 111,872.12 = 50,851.98 : x
2. Step 2: Convert to fraction form
   81,065.38/111,872.12 = 50,851.98/x
3. Step 3: Cross multiply
   81,065.38x = 111,872.12 × 50,851.98
4. Step 4: Simplify right side
   81,065.38x = 5,688,918,808.80
5. Step 5: Solve for x
   x = 5,688,918,808.80/81,065.38
6. Step 6: Final answer
   x = 70,176.92