Finding the Fourth Proportional to 105,857.81, 146,078.42 and 62,839.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,857.81 : 146,078.42 = 62,839.14 : x
2. Step 2: Convert to fraction form
   105,857.81/146,078.42 = 62,839.14/x
3. Step 3: Cross multiply
   105,857.81x = 146,078.42 × 62,839.14
4. Step 4: Simplify right side
   105,857.81x = 9,179,442,807.65
5. Step 5: Solve for x
   x = 9,179,442,807.65/105,857.81
6. Step 6: Final answer
   x = 86,714.84