Finding the Fourth Proportional to 78,067.41, 107,733.09 and 42,257.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,067.41 : 107,733.09 = 42,257.31 : x
2. Step 2: Convert to fraction form
   78,067.41/107,733.09 = 42,257.31/x
3. Step 3: Cross multiply
   78,067.41x = 107,733.09 × 42,257.31
4. Step 4: Simplify right side
   78,067.41x = 4,552,510,704.15
5. Step 5: Solve for x
   x = 4,552,510,704.15/78,067.41
6. Step 6: Final answer
   x = 58,315.12