Finding the Fourth Proportional to 86,057.55, 128,899.39 and 41,591.05

Step by Step Solution

1. Step 1: Write the proportion equation
   86,057.55 : 128,899.39 = 41,591.05 : x
2. Step 2: Convert to fraction form
   86,057.55/128,899.39 = 41,591.05/x
3. Step 3: Cross multiply
   86,057.55x = 128,899.39 × 41,591.05
4. Step 4: Simplify right side
   86,057.55x = 5,361,060,329.96
5. Step 5: Solve for x
   x = 5,361,060,329.96/86,057.55
6. Step 6: Final answer
   x = 62,296.22