Finding the Fourth Proportional to 78,046.48, 117,088.34 and 25,456

Step by Step Solution

1. Step 1: Write the proportion equation
   78,046.48 : 117,088.34 = 25,456 : x
2. Step 2: Convert to fraction form
   78,046.48/117,088.34 = 25,456/x
3. Step 3: Cross multiply
   78,046.48x = 117,088.34 × 25,456
4. Step 4: Simplify right side
   78,046.48x = 2,980,600,783.04
5. Step 5: Solve for x
   x = 2,980,600,783.04/78,046.48
6. Step 6: Final answer
   x = 38,190.07