Finding the Fourth Proportional to 78,006.71, 107,648.60 and 42,196.41

Step by Step Solution

1. Step 1: Write the proportion equation
   78,006.71 : 107,648.60 = 42,196.41 : x
2. Step 2: Convert to fraction form
   78,006.71/107,648.60 = 42,196.41/x
3. Step 3: Cross multiply
   78,006.71x = 107,648.60 × 42,196.41
4. Step 4: Simplify right side
   78,006.71x = 4,542,384,250.54
5. Step 5: Solve for x
   x = 4,542,384,250.54/78,006.71
6. Step 6: Final answer
   x = 58,230.68