Finding the Fourth Proportional to 105,842.78, 146,057.70 and 62,824.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,842.78 : 146,057.70 = 62,824.15 : x
2. Step 2: Convert to fraction form
   105,842.78/146,057.70 = 62,824.15/x
3. Step 3: Cross multiply
   105,842.78x = 146,057.70 × 62,824.15
4. Step 4: Simplify right side
   105,842.78x = 9,175,951,271.62
5. Step 5: Solve for x
   x = 9,175,951,271.62/105,842.78
6. Step 6: Final answer
   x = 86,694.16