Finding the Fourth Proportional to 105,951.83, 146,212.82 and 57,553.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,951.83 : 146,212.82 = 57,553.31 : x
2. Step 2: Convert to fraction form
   105,951.83/146,212.82 = 57,553.31/x
3. Step 3: Cross multiply
   105,951.83x = 146,212.82 × 57,553.31
4. Step 4: Simplify right side
   105,951.83x = 8,415,031,833.20
5. Step 5: Solve for x
   x = 8,415,031,833.20/105,951.83
6. Step 6: Final answer
   x = 79,423.19