Finding the Fourth Proportional to 73,116.72, 109,660.50 and 20,526.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,116.72 : 109,660.50 = 20,526.72 : x
2. Step 2: Convert to fraction form
   73,116.72/109,660.50 = 20,526.72/x
3. Step 3: Cross multiply
   73,116.72x = 109,660.50 × 20,526.72
4. Step 4: Simplify right side
   73,116.72x = 2,250,970,378.56
5. Step 5: Solve for x
   x = 2,250,970,378.56/73,116.72
6. Step 6: Final answer
   x = 30,785.99