Finding the Fourth Proportional to 78,780.48, 118,182.72 and 26,178.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,780.48 : 118,182.72 = 26,178.24 : x
2. Step 2: Convert to fraction form
   78,780.48/118,182.72 = 26,178.24/x
3. Step 3: Cross multiply
   78,780.48x = 118,182.72 × 26,178.24
4. Step 4: Simplify right side
   78,780.48x = 3,093,815,608.01
5. Step 5: Solve for x
   x = 3,093,815,608.01/78,780.48
6. Step 6: Final answer
   x = 39,271.35