Finding the Fourth Proportional to 57,066.54, 85,603.92 and 17,618.55

Step by Step Solution

1. Step 1: Write the proportion equation
   57,066.54 : 85,603.92 = 17,618.55 : x
2. Step 2: Convert to fraction form
   57,066.54/85,603.92 = 17,618.55/x
3. Step 3: Cross multiply
   57,066.54x = 85,603.92 × 17,618.55
4. Step 4: Simplify right side
   57,066.54x = 1,508,216,944.72
5. Step 5: Solve for x
   x = 1,508,216,944.72/57,066.54
6. Step 6: Final answer
   x = 26,429.09