Finding the Fourth Proportional to 78,166.10, 107,864.12 and 49,868.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,166.10 : 107,864.12 = 49,868.76 : x
2. Step 2: Convert to fraction form
   78,166.10/107,864.12 = 49,868.76/x
3. Step 3: Cross multiply
   78,166.10x = 107,864.12 × 49,868.76
4. Step 4: Simplify right side
   78,166.10x = 5,379,049,912.89
5. Step 5: Solve for x
   x = 5,379,049,912.89/78,166.10
6. Step 6: Final answer
   x = 68,815.64