Finding the Fourth Proportional to 78,076.72, 107,745.91 and 42,266.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,076.72 : 107,745.91 = 42,266.73 : x
2. Step 2: Convert to fraction form
   78,076.72/107,745.91 = 42,266.73/x
3. Step 3: Cross multiply
   78,076.72x = 107,745.91 × 42,266.73
4. Step 4: Simplify right side
   78,076.72x = 4,554,067,942.88
5. Step 5: Solve for x
   x = 4,554,067,942.88/78,076.72
6. Step 6: Final answer
   x = 58,328.11