Finding the Fourth Proportional to 86,420.43, 129,619.71 and 33,866.82

Step by Step Solution

1. Step 1: Write the proportion equation
   86,420.43 : 129,619.71 = 33,866.82 : x
2. Step 2: Convert to fraction form
   86,420.43/129,619.71 = 33,866.82/x
3. Step 3: Cross multiply
   86,420.43x = 129,619.71 × 33,866.82
4. Step 4: Simplify right side
   86,420.43x = 4,389,807,387.02
5. Step 5: Solve for x
   x = 4,389,807,387.02/86,420.43
6. Step 6: Final answer
   x = 50,795.94