Finding the Fourth Proportional to 78,498.87, 117,731.81 and 25,896.03

Step by Step Solution

1. Step 1: Write the proportion equation
   78,498.87 : 117,731.81 = 25,896.03 : x
2. Step 2: Convert to fraction form
   78,498.87/117,731.81 = 25,896.03/x
3. Step 3: Cross multiply
   78,498.87x = 117,731.81 × 25,896.03
4. Step 4: Simplify right side
   78,498.87x = 3,048,786,483.71
5. Step 5: Solve for x
   x = 3,048,786,483.71/78,498.87
6. Step 6: Final answer
   x = 38,838.60