Finding the Fourth Proportional to 57,859.56, 86,790.78 and 16,305

Step by Step Solution

1. Step 1: Write the proportion equation
   57,859.56 : 86,790.78 = 16,305 : x
2. Step 2: Convert to fraction form
   57,859.56/86,790.78 = 16,305/x
3. Step 3: Cross multiply
   57,859.56x = 86,790.78 × 16,305
4. Step 4: Simplify right side
   57,859.56x = 1,415,123,667.90
5. Step 5: Solve for x
   x = 1,415,123,667.90/57,859.56
6. Step 6: Final answer
   x = 24,457.91