Finding the Fourth Proportional to 276,057.27, 414,086.00 and 86,532.39

Step by Step Solution

1. Step 1: Write the proportion equation
   276,057.27 : 414,086.00 = 86,532.39 : x
2. Step 2: Convert to fraction form
   276,057.27/414,086.00 = 86,532.39/x
3. Step 3: Cross multiply
   276,057.27x = 414,086.00 × 86,532.39
4. Step 4: Simplify right side
   276,057.27x = 35,831,850,812.88
5. Step 5: Solve for x
   x = 35,831,850,812.88/276,057.27
6. Step 6: Final answer
   x = 129,798.61