Finding the Fourth Proportional to 55,921.50, 77,171.67 and 30,771

Step by Step Solution

1. Step 1: Write the proportion equation
   55,921.50 : 77,171.67 = 30,771 : x
2. Step 2: Convert to fraction form
   55,921.50/77,171.67 = 30,771/x
3. Step 3: Cross multiply
   55,921.50x = 77,171.67 × 30,771
4. Step 4: Simplify right side
   55,921.50x = 2,374,649,457.57
5. Step 5: Solve for x
   x = 2,374,649,457.57/55,921.50
6. Step 6: Final answer
   x = 42,463.98