Finding the Fourth Proportional to 59,760.78, 89,620.28 and 17,629.68

Step by Step Solution

1. Step 1: Write the proportion equation
   59,760.78 : 89,620.28 = 17,629.68 : x
2. Step 2: Convert to fraction form
   59,760.78/89,620.28 = 17,629.68/x
3. Step 3: Cross multiply
   59,760.78x = 89,620.28 × 17,629.68
4. Step 4: Simplify right side
   59,760.78x = 1,579,976,901.98
5. Step 5: Solve for x
   x = 1,579,976,901.98/59,760.78
6. Step 6: Final answer
   x = 26,438.36