Finding the Fourth Proportional to 55,921.52, 77,171.69 and 30,771.02

Step by Step Solution

1. Step 1: Write the proportion equation
   55,921.52 : 77,171.69 = 30,771.02 : x
2. Step 2: Convert to fraction form
   55,921.52/77,171.69 = 30,771.02/x
3. Step 3: Cross multiply
   55,921.52x = 77,171.69 × 30,771.02
4. Step 4: Simplify right side
   55,921.52x = 2,374,651,616.42
5. Step 5: Solve for x
   x = 2,374,651,616.42/55,921.52
6. Step 6: Final answer
   x = 42,464.00