Finding the Fourth Proportional to 158,517, 218,753.46 and 91,449

Step by Step Solution

1. Step 1: Write the proportion equation
   158,517 : 218,753.46 = 91,449 : x
2. Step 2: Convert to fraction form
   158,517/218,753.46 = 91,449/x
3. Step 3: Cross multiply
   158,517x = 218,753.46 × 91,449
4. Step 4: Simplify right side
   158,517x = 20,004,785,163.54
5. Step 5: Solve for x
   x = 20,004,785,163.54/158,517
6. Step 6: Final answer
   x = 126,199.62