Finding the Fourth Proportional to 78,162.90, 117,269.46 and 25,560.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,162.90 : 117,269.46 = 25,560.42 : x
2. Step 2: Convert to fraction form
   78,162.90/117,269.46 = 25,560.42/x
3. Step 3: Cross multiply
   78,162.90x = 117,269.46 × 25,560.42
4. Step 4: Simplify right side
   78,162.90x = 2,997,456,650.77
5. Step 5: Solve for x
   x = 2,997,456,650.77/78,162.90
6. Step 6: Final answer
   x = 38,348.84