Finding the Fourth Proportional to 59,779.84, 89,648.70 and 17,648.78

Step by Step Solution

1. Step 1: Write the proportion equation
   59,779.84 : 89,648.70 = 17,648.78 : x
2. Step 2: Convert to fraction form
   59,779.84/89,648.70 = 17,648.78/x
3. Step 3: Cross multiply
   59,779.84x = 89,648.70 × 17,648.78
4. Step 4: Simplify right side
   59,779.84x = 1,582,190,183.59
5. Step 5: Solve for x
   x = 1,582,190,183.59/59,779.84
6. Step 6: Final answer
   x = 26,466.95