Finding the Fourth Proportional to 81,108.50, 111,898.41 and 50,881.46

Step by Step Solution

1. Step 1: Write the proportion equation
   81,108.50 : 111,898.41 = 50,881.46 : x
2. Step 2: Convert to fraction form
   81,108.50/111,898.41 = 50,881.46/x
3. Step 3: Cross multiply
   81,108.50x = 111,898.41 × 50,881.46
4. Step 4: Simplify right side
   81,108.50x = 5,693,554,472.48
5. Step 5: Solve for x
   x = 5,693,554,472.48/81,108.50
6. Step 6: Final answer
   x = 70,196.77