Finding the Fourth Proportional to 81,326.69, 112,300.10 and 51,162.49

Step by Step Solution

1. Step 1: Write the proportion equation
   81,326.69 : 112,300.10 = 51,162.49 : x
2. Step 2: Convert to fraction form
   81,326.69/112,300.10 = 51,162.49/x
3. Step 3: Cross multiply
   81,326.69x = 112,300.10 × 51,162.49
4. Step 4: Simplify right side
   81,326.69x = 5,745,552,743.25
5. Step 5: Solve for x
   x = 5,745,552,743.25/81,326.69
6. Step 6: Final answer
   x = 70,647.81