Finding the Fourth Proportional to 105,028.56, 144,936.18 and 57,282.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105,028.56 : 144,936.18 = 57,282.84 : x
2. Step 2: Convert to fraction form
   105,028.56/144,936.18 = 57,282.84/x
3. Step 3: Cross multiply
   105,028.56x = 144,936.18 × 57,282.84
4. Step 4: Simplify right side
   105,028.56x = 8,302,356,009.15
5. Step 5: Solve for x
   x = 8,302,356,009.15/105,028.56
6. Step 6: Final answer
   x = 79,048.56