Finding the Fourth Proportional to 105,661.48, 145,816.46 and 57,914.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,661.48 : 145,816.46 = 57,914.82 : x
2. Step 2: Convert to fraction form
   105,661.48/145,816.46 = 57,914.82/x
3. Step 3: Cross multiply
   105,661.48x = 145,816.46 × 57,914.82
4. Step 4: Simplify right side
   105,661.48x = 8,444,934,033.94
5. Step 5: Solve for x
   x = 8,444,934,033.94/105,661.48
6. Step 6: Final answer
   x = 79,924.43