Finding the Fourth Proportional to 105,067.62, 144,987.41 and 59,739.21

Step by Step Solution

1. Step 1: Write the proportion equation
   105,067.62 : 144,987.41 = 59,739.21 : x
2. Step 2: Convert to fraction form
   105,067.62/144,987.41 = 59,739.21/x
3. Step 3: Cross multiply
   105,067.62x = 144,987.41 × 59,739.21
4. Step 4: Simplify right side
   105,067.62x = 8,661,433,482.69
5. Step 5: Solve for x
   x = 8,661,433,482.69/105,067.62
6. Step 6: Final answer
   x = 82,436.75