Finding the Fourth Proportional to 82,456.09, 123,673.20 and 45,058.39

Step by Step Solution

1. Step 1: Write the proportion equation
   82,456.09 : 123,673.20 = 45,058.39 : x
2. Step 2: Convert to fraction form
   82,456.09/123,673.20 = 45,058.39/x
3. Step 3: Cross multiply
   82,456.09x = 123,673.20 × 45,058.39
4. Step 4: Simplify right side
   82,456.09x = 5,572,514,800.00
5. Step 5: Solve for x
   x = 5,572,514,800.00/82,456.09
6. Step 6: Final answer
   x = 67,581.61