Finding the Fourth Proportional to 105,866.85, 146,086.54 and 62,838.99

Step by Step Solution

1. Step 1: Write the proportion equation
   105,866.85 : 146,086.54 = 62,838.99 : x
2. Step 2: Convert to fraction form
   105,866.85/146,086.54 = 62,838.99/x
3. Step 3: Cross multiply
   105,866.85x = 146,086.54 × 62,838.99
4. Step 4: Simplify right side
   105,866.85x = 9,179,930,469.10
5. Step 5: Solve for x
   x = 9,179,930,469.10/105,866.85
6. Step 6: Final answer
   x = 86,712.04