Finding the Fourth Proportional to 59,419.36, 81,825.89 and 55,620.39

Step by Step Solution

1. Step 1: Write the proportion equation
   59,419.36 : 81,825.89 = 55,620.39 : x
2. Step 2: Convert to fraction form
   59,419.36/81,825.89 = 55,620.39/x
3. Step 3: Cross multiply
   59,419.36x = 81,825.89 × 55,620.39
4. Step 4: Simplify right side
   59,419.36x = 4,551,187,913.90
5. Step 5: Solve for x
   x = 4,551,187,913.90/59,419.36
6. Step 6: Final answer
   x = 76,594.36