Finding the Fourth Proportional to 78,828.45, 108,783.57 and 43,019.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,828.45 : 108,783.57 = 43,019.25 : x
2. Step 2: Convert to fraction form
   78,828.45/108,783.57 = 43,019.25/x
3. Step 3: Cross multiply
   78,828.45x = 108,783.57 × 43,019.25
4. Step 4: Simplify right side
   78,828.45x = 4,679,787,593.72
5. Step 5: Solve for x
   x = 4,679,787,593.72/78,828.45
6. Step 6: Final answer
   x = 59,366.73