Finding the Fourth Proportional to 105,008.68, 144,939.54 and 59,713.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,008.68 : 144,939.54 = 59,713.12 : x
2. Step 2: Convert to fraction form
   105,008.68/144,939.54 = 59,713.12/x
3. Step 3: Cross multiply
   105,008.68x = 144,939.54 × 59,713.12
4. Step 4: Simplify right side
   105,008.68x = 8,654,792,144.76
5. Step 5: Solve for x
   x = 8,654,792,144.76/105,008.68
6. Step 6: Final answer
   x = 82,419.78