Finding the Fourth Proportional to 55,570.38, 76,689 and 30,419.88

Step by Step Solution

1. Step 1: Write the proportion equation
   55,570.38 : 76,689 = 30,419.88 : x
2. Step 2: Convert to fraction form
   55,570.38/76,689 = 30,419.88/x
3. Step 3: Cross multiply
   55,570.38x = 76,689 × 30,419.88
4. Step 4: Simplify right side
   55,570.38x = 2,332,870,177.32
5. Step 5: Solve for x
   x = 2,332,870,177.32/55,570.38
6. Step 6: Final answer
   x = 41,980.46