Finding the Fourth Proportional to 105,062.59, 144,983.94 and 57,317.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105,062.59 : 144,983.94 = 57,317.62 : x
2. Step 2: Convert to fraction form
   105,062.59/144,983.94 = 57,317.62/x
3. Step 3: Cross multiply
   105,062.59x = 144,983.94 × 57,317.62
4. Step 4: Simplify right side
   105,062.59x = 8,310,134,379.02
5. Step 5: Solve for x
   x = 8,310,134,379.02/105,062.59
6. Step 6: Final answer
   x = 79,096.99