Finding the Fourth Proportional to 63,687, 87,891.71 and 35,401.80

Step by Step Solution

1. Step 1: Write the proportion equation
   63,687 : 87,891.71 = 35,401.80 : x
2. Step 2: Convert to fraction form
   63,687/87,891.71 = 35,401.80/x
3. Step 3: Cross multiply
   63,687x = 87,891.71 × 35,401.80
4. Step 4: Simplify right side
   63,687x = 3,111,524,562.07
5. Step 5: Solve for x
   x = 3,111,524,562.07/63,687
6. Step 6: Final answer
   x = 48,856.51