Finding the Fourth Proportional to 59,770.81, 89,635.29 and 17,639.71

Step by Step Solution

1. Step 1: Write the proportion equation
   59,770.81 : 89,635.29 = 17,639.71 : x
2. Step 2: Convert to fraction form
   59,770.81/89,635.29 = 17,639.71/x
3. Step 3: Cross multiply
   59,770.81x = 89,635.29 × 17,639.71
4. Step 4: Simplify right side
   59,770.81x = 1,581,140,521.37
5. Step 5: Solve for x
   x = 1,581,140,521.37/59,770.81
6. Step 6: Final answer
   x = 26,453.39