Finding the Fourth Proportional to 72,987.12, 109,523.22 and 30,864.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72,987.12 : 109,523.22 = 30,864.70 : x
2. Step 2: Convert to fraction form
   72,987.12/109,523.22 = 30,864.70/x
3. Step 3: Cross multiply
   72,987.12x = 109,523.22 × 30,864.70
4. Step 4: Simplify right side
   72,987.12x = 3,380,401,328.33
5. Step 5: Solve for x
   x = 3,380,401,328.33/72,987.12
6. Step 6: Final answer
   x = 46,315.04