Finding the Fourth Proportional to 78,168.60, 107,867.57 and 49,871.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,168.60 : 107,867.57 = 49,871.25 : x
2. Step 2: Convert to fraction form
   78,168.60/107,867.57 = 49,871.25/x
3. Step 3: Cross multiply
   78,168.60x = 107,867.57 × 49,871.25
4. Step 4: Simplify right side
   78,168.60x = 5,379,490,301.01
5. Step 5: Solve for x
   x = 5,379,490,301.01/78,168.60
6. Step 6: Final answer
   x = 68,819.07