Finding the Fourth Proportional to 59,849.79, 81,993.87 and 57,606.29

Step by Step Solution

1. Step 1: Write the proportion equation
   59,849.79 : 81,993.87 = 57,606.29 : x
2. Step 2: Convert to fraction form
   59,849.79/81,993.87 = 57,606.29/x
3. Step 3: Cross multiply
   59,849.79x = 81,993.87 × 57,606.29
4. Step 4: Simplify right side
   59,849.79x = 4,723,362,550.95
5. Step 5: Solve for x
   x = 4,723,362,550.95/59,849.79
6. Step 6: Final answer
   x = 78,920.29