Finding the Fourth Proportional to 105,617.94, 158,108.64 and 68,103.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,617.94 : 158,108.64 = 68,103.40 : x
2. Step 2: Convert to fraction form
   105,617.94/158,108.64 = 68,103.40/x
3. Step 3: Cross multiply
   105,617.94x = 158,108.64 × 68,103.40
4. Step 4: Simplify right side
   105,617.94x = 10,767,735,953.38
5. Step 5: Solve for x
   x = 10,767,735,953.38/105,617.94
6. Step 6: Final answer
   x = 101,949.88