Finding the Fourth Proportional to 55,921, 77,171.52 and 30,771.04

Step by Step Solution

1. Step 1: Write the proportion equation
   55,921 : 77,171.52 = 30,771.04 : x
2. Step 2: Convert to fraction form
   55,921/77,171.52 = 30,771.04/x
3. Step 3: Cross multiply
   55,921x = 77,171.52 × 30,771.04
4. Step 4: Simplify right side
   55,921x = 2,374,647,928.78
5. Step 5: Solve for x
   x = 2,374,647,928.78/55,921
6. Step 6: Final answer
   x = 42,464.33