Finding the Fourth Proportional to 86,083.78, 129,164.62 and 43,942.10

Step by Step Solution

1. Step 1: Write the proportion equation
   86,083.78 : 129,164.62 = 43,942.10 : x
2. Step 2: Convert to fraction form
   86,083.78/129,164.62 = 43,942.10/x
3. Step 3: Cross multiply
   86,083.78x = 129,164.62 × 43,942.10
4. Step 4: Simplify right side
   86,083.78x = 5,675,764,648.50
5. Step 5: Solve for x
   x = 5,675,764,648.50/86,083.78
6. Step 6: Final answer
   x = 65,933.03