Finding the Fourth Proportional to 55,419, 76,478.22 and 30,268.56

Step by Step Solution

1. Step 1: Write the proportion equation
   55,419 : 76,478.22 = 30,268.56 : x
2. Step 2: Convert to fraction form
   55,419/76,478.22 = 30,268.56/x
3. Step 3: Cross multiply
   55,419x = 76,478.22 × 30,268.56
4. Step 4: Simplify right side
   55,419x = 2,314,885,590.76
5. Step 5: Solve for x
   x = 2,314,885,590.76/55,419
6. Step 6: Final answer
   x = 41,770.61