Finding the Fourth Proportional to 105,019.94, 144,845.61 and 67,297.70

Step by Step Solution

1. Step 1: Write the proportion equation
   105,019.94 : 144,845.61 = 67,297.70 : x
2. Step 2: Convert to fraction form
   105,019.94/144,845.61 = 67,297.70/x
3. Step 3: Cross multiply
   105,019.94x = 144,845.61 × 67,297.70
4. Step 4: Simplify right side
   105,019.94x = 9,747,776,408.10
5. Step 5: Solve for x
   x = 9,747,776,408.10/105,019.94
6. Step 6: Final answer
   x = 92,818.34