Finding the Fourth Proportional to 67,171.91, 100,723.10 and 19,780.83

Step by Step Solution

1. Step 1: Write the proportion equation
   67,171.91 : 100,723.10 = 19,780.83 : x
2. Step 2: Convert to fraction form
   67,171.91/100,723.10 = 19,780.83/x
3. Step 3: Cross multiply
   67,171.91x = 100,723.10 × 19,780.83
4. Step 4: Simplify right side
   67,171.91x = 1,992,386,419.27
5. Step 5: Solve for x
   x = 1,992,386,419.27/67,171.91
6. Step 6: Final answer
   x = 29,661.01