Finding the Fourth Proportional to 105,039.54, 144,966.82 and 59,724.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,039.54 : 144,966.82 = 59,724.31 : x
2. Step 2: Convert to fraction form
   105,039.54/144,966.82 = 59,724.31/x
3. Step 3: Cross multiply
   105,039.54x = 144,966.82 × 59,724.31
4. Step 4: Simplify right side
   105,039.54x = 8,658,043,297.39
5. Step 5: Solve for x
   x = 8,658,043,297.39/105,039.54
6. Step 6: Final answer
   x = 82,426.52