Finding the Fourth Proportional to 67,725.96, 101,605.20 and 20,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   67,725.96 : 101,605.20 = 20,978.82 : x
2. Step 2: Convert to fraction form
   67,725.96/101,605.20 = 20,978.82/x
3. Step 3: Cross multiply
   67,725.96x = 101,605.20 × 20,978.82
4. Step 4: Simplify right side
   67,725.96x = 2,131,557,201.86
5. Step 5: Solve for x
   x = 2,131,557,201.86/67,725.96
6. Step 6: Final answer
   x = 31,473.27