Finding the Fourth Proportional to 78,469.89, 117,688.23 and 25,866.87

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.89 : 117,688.23 = 25,866.87 : x
2. Step 2: Convert to fraction form
   78,469.89/117,688.23 = 25,866.87/x
3. Step 3: Cross multiply
   78,469.89x = 117,688.23 × 25,866.87
4. Step 4: Simplify right side
   78,469.89x = 3,044,226,145.94
5. Step 5: Solve for x
   x = 3,044,226,145.94/78,469.89
6. Step 6: Final answer
   x = 38,794.83