Finding the Fourth Proportional to 59,112.51, 81,544.89 and 39,993.13

Step by Step Solution

1. Step 1: Write the proportion equation
   59,112.51 : 81,544.89 = 39,993.13 : x
2. Step 2: Convert to fraction form
   59,112.51/81,544.89 = 39,993.13/x
3. Step 3: Cross multiply
   59,112.51x = 81,544.89 × 39,993.13
4. Step 4: Simplify right side
   59,112.51x = 3,261,235,386.61
5. Step 5: Solve for x
   x = 3,261,235,386.61/59,112.51
6. Step 6: Final answer
   x = 55,169.97