Finding the Fourth Proportional to 78,067.76, 107,733.83 and 42,257.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,067.76 : 107,733.83 = 42,257.75 : x
2. Step 2: Convert to fraction form
   78,067.76/107,733.83 = 42,257.75/x
3. Step 3: Cross multiply
   78,067.76x = 107,733.83 × 42,257.75
4. Step 4: Simplify right side
   78,067.76x = 4,552,588,504.72
5. Step 5: Solve for x
   x = 4,552,588,504.72/78,067.76
6. Step 6: Final answer
   x = 58,315.86