Finding the Fourth Proportional to 87,039, 120,113.94 and 49,315.80

Step by Step Solution

1. Step 1: Write the proportion equation
   87,039 : 120,113.94 = 49,315.80 : x
2. Step 2: Convert to fraction form
   87,039/120,113.94 = 49,315.80/x
3. Step 3: Cross multiply
   87,039x = 120,113.94 × 49,315.80
4. Step 4: Simplify right side
   87,039x = 5,923,515,042.25
5. Step 5: Solve for x
   x = 5,923,515,042.25/87,039
6. Step 6: Final answer
   x = 68,055.87