Finding the Fourth Proportional to 72,933.15, 109,390.01 and 20,338.23

Step by Step Solution

1. Step 1: Write the proportion equation
   72,933.15 : 109,390.01 = 20,338.23 : x
2. Step 2: Convert to fraction form
   72,933.15/109,390.01 = 20,338.23/x
3. Step 3: Cross multiply
   72,933.15x = 109,390.01 × 20,338.23
4. Step 4: Simplify right side
   72,933.15x = 2,224,799,081.39
5. Step 5: Solve for x
   x = 2,224,799,081.39/72,933.15
6. Step 6: Final answer
   x = 30,504.63