Finding the Fourth Proportional to 56,144.38, 77,479.31 and 30,993.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56,144.38 : 77,479.31 = 30,993.88 : x
2. Step 2: Convert to fraction form
   56,144.38/77,479.31 = 30,993.88/x
3. Step 3: Cross multiply
   56,144.38x = 77,479.31 × 30,993.88
4. Step 4: Simplify right side
   56,144.38x = 2,401,383,894.26
5. Step 5: Solve for x
   x = 2,401,383,894.26/56,144.38
6. Step 6: Final answer
   x = 42,771.58