Finding the Fourth Proportional to 105,108.89, 145,208.23 and 68,896.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,108.89 : 145,208.23 = 68,896.28 : x
2. Step 2: Convert to fraction form
   105,108.89/145,208.23 = 68,896.28/x
3. Step 3: Cross multiply
   105,108.89x = 145,208.23 × 68,896.28
4. Step 4: Simplify right side
   105,108.89x = 10,004,307,063.16
5. Step 5: Solve for x
   x = 10,004,307,063.16/105,108.89
6. Step 6: Final answer
   x = 95,180.41