Finding the Fourth Proportional to 59,807.44, 81,936.56 and 57,565.36

Step by Step Solution

1. Step 1: Write the proportion equation
   59,807.44 : 81,936.56 = 57,565.36 : x
2. Step 2: Convert to fraction form
   59,807.44/81,936.56 = 57,565.36/x
3. Step 3: Cross multiply
   59,807.44x = 81,936.56 × 57,565.36
4. Step 4: Simplify right side
   59,807.44x = 4,716,707,573.56
5. Step 5: Solve for x
   x = 4,716,707,573.56/59,807.44
6. Step 6: Final answer
   x = 78,864.90