Finding the Fourth Proportional to 57,391.82, 86,038.42 and 19,947.03

Step by Step Solution

1. Step 1: Write the proportion equation
   57,391.82 : 86,038.42 = 19,947.03 : x
2. Step 2: Convert to fraction form
   57,391.82/86,038.42 = 19,947.03/x
3. Step 3: Cross multiply
   57,391.82x = 86,038.42 × 19,947.03
4. Step 4: Simplify right side
   57,391.82x = 1,716,210,944.89
5. Step 5: Solve for x
   x = 1,716,210,944.89/57,391.82
6. Step 6: Final answer
   x = 29,903.41