Finding the Fourth Proportional to 108,789.99, 150,091.70 and 71,086.11

Step by Step Solution

1. Step 1: Write the proportion equation
   108,789.99 : 150,091.70 = 71,086.11 : x
2. Step 2: Convert to fraction form
   108,789.99/150,091.70 = 71,086.11/x
3. Step 3: Cross multiply
   108,789.99x = 150,091.70 × 71,086.11
4. Step 4: Simplify right side
   108,789.99x = 10,669,434,740.86
5. Step 5: Solve for x
   x = 10,669,434,740.86/108,789.99
6. Step 6: Final answer
   x = 98,073.68