Finding the Fourth Proportional to 67,185.65, 100,774.82 and 20,434.88

Step by Step Solution

1. Step 1: Write the proportion equation
   67,185.65 : 100,774.82 = 20,434.88 : x
2. Step 2: Convert to fraction form
   67,185.65/100,774.82 = 20,434.88/x
3. Step 3: Cross multiply
   67,185.65x = 100,774.82 × 20,434.88
4. Step 4: Simplify right side
   67,185.65x = 2,059,320,747.67
5. Step 5: Solve for x
   x = 2,059,320,747.67/67,185.65
6. Step 6: Final answer
   x = 30,651.20