Finding the Fourth Proportional to 78,300.75, 108,014.61 and 49,571.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,300.75 : 108,014.61 = 49,571.76 : x
2. Step 2: Convert to fraction form
   78,300.75/108,014.61 = 49,571.76/x
3. Step 3: Cross multiply
   78,300.75x = 108,014.61 × 49,571.76
4. Step 4: Simplify right side
   78,300.75x = 5,354,474,323.41
5. Step 5: Solve for x
   x = 5,354,474,323.41/78,300.75
6. Step 6: Final answer
   x = 68,383.44