Finding the Fourth Proportional to 105,912.66, 146,105.42 and 67,631.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,912.66 : 146,105.42 = 67,631.96 : x
2. Step 2: Convert to fraction form
   105,912.66/146,105.42 = 67,631.96/x
3. Step 3: Cross multiply
   105,912.66x = 146,105.42 × 67,631.96
4. Step 4: Simplify right side
   105,912.66x = 9,881,394,852.54
5. Step 5: Solve for x
   x = 9,881,394,852.54/105,912.66
6. Step 6: Final answer
   x = 93,297.58