Finding the Fourth Proportional to 73,142.80, 109,723 and 25,748.05

Step by Step Solution

1. Step 1: Write the proportion equation
   73,142.80 : 109,723 = 25,748.05 : x
2. Step 2: Convert to fraction form
   73,142.80/109,723 = 25,748.05/x
3. Step 3: Cross multiply
   73,142.80x = 109,723 × 25,748.05
4. Step 4: Simplify right side
   73,142.80x = 2,825,153,290.15
5. Step 5: Solve for x
   x = 2,825,153,290.15/73,142.80
6. Step 6: Final answer
   x = 38,625.17