Finding the Fourth Proportional to 81,325.69, 112,298.72 and 51,161.49

Step by Step Solution

1. Step 1: Write the proportion equation
   81,325.69 : 112,298.72 = 51,161.49 : x
2. Step 2: Convert to fraction form
   81,325.69/112,298.72 = 51,161.49/x
3. Step 3: Cross multiply
   81,325.69x = 112,298.72 × 51,161.49
4. Step 4: Simplify right side
   81,325.69x = 5,745,369,584.49
5. Step 5: Solve for x
   x = 5,745,369,584.49/81,325.69
6. Step 6: Final answer
   x = 70,646.43