Finding the Fourth Proportional to 72,713.76, 109,073.08 and 20,118.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,713.76 : 109,073.08 = 20,118.84 : x
2. Step 2: Convert to fraction form
   72,713.76/109,073.08 = 20,118.84/x
3. Step 3: Cross multiply
   72,713.76x = 109,073.08 × 20,118.84
4. Step 4: Simplify right side
   72,713.76x = 2,194,423,844.83
5. Step 5: Solve for x
   x = 2,194,423,844.83/72,713.76
6. Step 6: Final answer
   x = 30,178.94