Finding the Fourth Proportional to 105,898.86, 146,059.46 and 71,933.54

Step by Step Solution

1. Step 1: Write the proportion equation
   105,898.86 : 146,059.46 = 71,933.54 : x
2. Step 2: Convert to fraction form
   105,898.86/146,059.46 = 71,933.54/x
3. Step 3: Cross multiply
   105,898.86x = 146,059.46 × 71,933.54
4. Step 4: Simplify right side
   105,898.86x = 10,506,574,005.55
5. Step 5: Solve for x
   x = 10,506,574,005.55/105,898.86
6. Step 6: Final answer
   x = 99,213.28