Finding the Fourth Proportional to 104,763.99, 144,573.89 and 57,017.33

Step by Step Solution

1. Step 1: Write the proportion equation
   104,763.99 : 144,573.89 = 57,017.33 : x
2. Step 2: Convert to fraction form
   104,763.99/144,573.89 = 57,017.33/x
3. Step 3: Cross multiply
   104,763.99x = 144,573.89 × 57,017.33
4. Step 4: Simplify right side
   104,763.99x = 8,243,216,187.56
5. Step 5: Solve for x
   x = 8,243,216,187.56/104,763.99
6. Step 6: Final answer
   x = 78,683.68