Finding the Fourth Proportional to 78,519.83, 108,311.19 and 49,401.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,519.83 : 108,311.19 = 49,401.89 : x
2. Step 2: Convert to fraction form
   78,519.83/108,311.19 = 49,401.89/x
3. Step 3: Cross multiply
   78,519.83x = 108,311.19 × 49,401.89
4. Step 4: Simplify right side
   78,519.83x = 5,350,777,494.15
5. Step 5: Solve for x
   x = 5,350,777,494.15/78,519.83
6. Step 6: Final answer
   x = 68,145.56