Finding the Fourth Proportional to 105,994.26, 146,292.75 and 70,185.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,994.26 : 146,292.75 = 70,185.78 : x
2. Step 2: Convert to fraction form
   105,994.26/146,292.75 = 70,185.78/x
3. Step 3: Cross multiply
   105,994.26x = 146,292.75 × 70,185.78
4. Step 4: Simplify right side
   105,994.26x = 10,267,670,767.10
5. Step 5: Solve for x
   x = 10,267,670,767.10/105,994.26
6. Step 6: Final answer
   x = 96,870.06