Finding the Fourth Proportional to 78,912.72, 108,896.40 and 43,104.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,912.72 : 108,896.40 = 43,104.02 : x
2. Step 2: Convert to fraction form
   78,912.72/108,896.40 = 43,104.02/x
3. Step 3: Cross multiply
   78,912.72x = 108,896.40 × 43,104.02
4. Step 4: Simplify right side
   78,912.72x = 4,693,872,603.53
5. Step 5: Solve for x
   x = 4,693,872,603.53/78,912.72
6. Step 6: Final answer
   x = 59,481.83