Finding the Fourth Proportional to 105,024.24, 144,930.28 and 57,278.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,024.24 : 144,930.28 = 57,278.52 : x
2. Step 2: Convert to fraction form
   105,024.24/144,930.28 = 57,278.52/x
3. Step 3: Cross multiply
   105,024.24x = 144,930.28 × 57,278.52
4. Step 4: Simplify right side
   105,024.24x = 8,301,391,941.59
5. Step 5: Solve for x
   x = 8,301,391,941.59/105,024.24
6. Step 6: Final answer
   x = 79,042.63