Finding the Fourth Proportional to 78,784, 108,721.92 and 43,456

Step by Step Solution

1. Step 1: Write the proportion equation
   78,784 : 108,721.92 = 43,456 : x
2. Step 2: Convert to fraction form
   78,784/108,721.92 = 43,456/x
3. Step 3: Cross multiply
   78,784x = 108,721.92 × 43,456
4. Step 4: Simplify right side
   78,784x = 4,724,619,755.52
5. Step 5: Solve for x
   x = 4,724,619,755.52/78,784
6. Step 6: Final answer
   x = 59,969.28