Finding the Fourth Proportional to 105,045.12, 144,956.39 and 59,716.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,045.12 : 144,956.39 = 59,716.71 : x
2. Step 2: Convert to fraction form
   105,045.12/144,956.39 = 59,716.71/x
3. Step 3: Cross multiply
   105,045.12x = 144,956.39 × 59,716.71
4. Step 4: Simplify right side
   105,045.12x = 8,656,318,405.69
5. Step 5: Solve for x
   x = 8,656,318,405.69/105,045.12
6. Step 6: Final answer
   x = 82,405.72