Finding the Fourth Proportional to 72,755.82, 109,134.54 and 20,165.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,755.82 : 109,134.54 = 20,165.76 : x
2. Step 2: Convert to fraction form
   72,755.82/109,134.54 = 20,165.76/x
3. Step 3: Cross multiply
   72,755.82x = 109,134.54 × 20,165.76
4. Step 4: Simplify right side
   72,755.82x = 2,200,780,941.35
5. Step 5: Solve for x
   x = 2,200,780,941.35/72,755.82
6. Step 6: Final answer
   x = 30,248.86