Finding the Fourth Proportional to 195,111.12, 269,251.92 and 105,687.12

Step by Step Solution

1. Step 1: Write the proportion equation
   195,111.12 : 269,251.92 = 105,687.12 : x
2. Step 2: Convert to fraction form
   195,111.12/269,251.92 = 105,687.12/x
3. Step 3: Cross multiply
   195,111.12x = 269,251.92 × 105,687.12
4. Step 4: Simplify right side
   195,111.12x = 28,456,459,979.27
5. Step 5: Solve for x
   x = 28,456,459,979.27/195,111.12
6. Step 6: Final answer
   x = 145,847.45