Finding the Fourth Proportional to 56,144.75, 77,479.91 and 30,994.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,144.75 : 77,479.91 = 30,994.25 : x
2. Step 2: Convert to fraction form
   56,144.75/77,479.91 = 30,994.25/x
3. Step 3: Cross multiply
   56,144.75x = 77,479.91 × 30,994.25
4. Step 4: Simplify right side
   56,144.75x = 2,401,431,545.55
5. Step 5: Solve for x
   x = 2,401,431,545.55/56,144.75
6. Step 6: Final answer
   x = 42,772.15