Finding the Fourth Proportional to 72,756.82, 109,136.04 and 20,166.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,756.82 : 109,136.04 = 20,166.76 : x
2. Step 2: Convert to fraction form
   72,756.82/109,136.04 = 20,166.76/x
3. Step 3: Cross multiply
   72,756.82x = 109,136.04 × 20,166.76
4. Step 4: Simplify right side
   72,756.82x = 2,200,920,326.03
5. Step 5: Solve for x
   x = 2,200,920,326.03/72,756.82
6. Step 6: Final answer
   x = 30,250.36