Finding the Fourth Proportional to 72,756.88, 109,135.37 and 20,166.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,756.88 : 109,135.37 = 20,166.82 : x
2. Step 2: Convert to fraction form
   72,756.88/109,135.37 = 20,166.82/x
3. Step 3: Cross multiply
   72,756.88x = 109,135.37 × 20,166.82
4. Step 4: Simplify right side
   72,756.88x = 2,200,913,362.42
5. Step 5: Solve for x
   x = 2,200,913,362.42/72,756.88
6. Step 6: Final answer
   x = 30,250.24