Finding the Fourth Proportional to 105,904.23, 146,143.46 and 57,504.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,904.23 : 146,143.46 = 57,504.27 : x
2. Step 2: Convert to fraction form
   105,904.23/146,143.46 = 57,504.27/x
3. Step 3: Cross multiply
   105,904.23x = 146,143.46 × 57,504.27
4. Step 4: Simplify right side
   105,904.23x = 8,403,872,108.10
5. Step 5: Solve for x
   x = 8,403,872,108.10/105,904.23
6. Step 6: Final answer
   x = 79,353.51