Finding the Fourth Proportional to 73,404, 110,111.50 and 20,817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,404 : 110,111.50 = 20,817.72 : x
2. Step 2: Convert to fraction form
   73,404/110,111.50 = 20,817.72/x
3. Step 3: Cross multiply
   73,404x = 110,111.50 × 20,817.72
4. Step 4: Simplify right side
   73,404x = 2,292,270,375.78
5. Step 5: Solve for x
   x = 2,292,270,375.78/73,404
6. Step 6: Final answer
   x = 31,228.14