Finding the Fourth Proportional to 105,132.18, 157,637.67 and 71,892.51

Step by Step Solution

1. Step 1: Write the proportion equation
   105,132.18 : 157,637.67 = 71,892.51 : x
2. Step 2: Convert to fraction form
   105,132.18/157,637.67 = 71,892.51/x
3. Step 3: Cross multiply
   105,132.18x = 157,637.67 × 71,892.51
4. Step 4: Simplify right side
   105,132.18x = 11,332,967,766.85
5. Step 5: Solve for x
   x = 11,332,967,766.85/105,132.18
6. Step 6: Final answer
   x = 107,797.32