Finding the Fourth Proportional to 59,796.41, 81,921.48 and 57,554.33

Step by Step Solution

1. Step 1: Write the proportion equation
   59,796.41 : 81,921.48 = 57,554.33 : x
2. Step 2: Convert to fraction form
   59,796.41/81,921.48 = 57,554.33/x
3. Step 3: Cross multiply
   59,796.41x = 81,921.48 × 57,554.33
4. Step 4: Simplify right side
   59,796.41x = 4,714,935,268.57
5. Step 5: Solve for x
   x = 4,714,935,268.57/59,796.41
6. Step 6: Final answer
   x = 78,849.81