Finding the Fourth Proportional to 81,687, 112,727.22 and 45,874.46

Step by Step Solution

1. Step 1: Write the proportion equation
   81,687 : 112,727.22 = 45,874.46 : x
2. Step 2: Convert to fraction form
   81,687/112,727.22 = 45,874.46/x
3. Step 3: Cross multiply
   81,687x = 112,727.22 × 45,874.46
4. Step 4: Simplify right side
   81,687x = 5,171,300,344.80
5. Step 5: Solve for x
   x = 5,171,300,344.80/81,687
6. Step 6: Final answer
   x = 63,306.28