Finding the Fourth Proportional to 105,860.39, 146,086.74 and 57,463.29

Step by Step Solution

1. Step 1: Write the proportion equation
   105,860.39 : 146,086.74 = 57,463.29 : x
2. Step 2: Convert to fraction form
   105,860.39/146,086.74 = 57,463.29/x
3. Step 3: Cross multiply
   105,860.39x = 146,086.74 × 57,463.29
4. Step 4: Simplify right side
   105,860.39x = 8,394,624,705.77
5. Step 5: Solve for x
   x = 8,394,624,705.77/105,860.39
6. Step 6: Final answer
   x = 79,299.02