Finding the Fourth Proportional to 55,791.37, 76,993.67 and 30,642.49

Step by Step Solution

1. Step 1: Write the proportion equation
   55,791.37 : 76,993.67 = 30,642.49 : x
2. Step 2: Convert to fraction form
   55,791.37/76,993.67 = 30,642.49/x
3. Step 3: Cross multiply
   55,791.37x = 76,993.67 × 30,642.49
4. Step 4: Simplify right side
   55,791.37x = 2,359,277,763.04
5. Step 5: Solve for x
   x = 2,359,277,763.04/55,791.37
6. Step 6: Final answer
   x = 42,287.50