Finding the Fourth Proportional to 59,774.78, 89,647.78 and 17,643.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,774.78 : 89,647.78 = 17,643.50 : x
2. Step 2: Convert to fraction form
   59,774.78/89,647.78 = 17,643.50/x
3. Step 3: Cross multiply
   59,774.78x = 89,647.78 × 17,643.50
4. Step 4: Simplify right side
   59,774.78x = 1,581,700,158.19
5. Step 5: Solve for x
   x = 1,581,700,158.19/59,774.78
6. Step 6: Final answer
   x = 26,461.00