Finding the Fourth Proportional to 72,965.04, 109,443.96 and 20,373.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,965.04 : 109,443.96 = 20,373.36 : x
2. Step 2: Convert to fraction form
   72,965.04/109,443.96 = 20,373.36/x
3. Step 3: Cross multiply
   72,965.04x = 109,443.96 × 20,373.36
4. Step 4: Simplify right side
   72,965.04x = 2,229,741,196.91
5. Step 5: Solve for x
   x = 2,229,741,196.91/72,965.04
6. Step 6: Final answer
   x = 30,559.03