Finding the Fourth Proportional to 80,659.63, 120,963.53 and 26,612.15

Step by Step Solution

1. Step 1: Write the proportion equation
   80,659.63 : 120,963.53 = 26,612.15 : x
2. Step 2: Convert to fraction form
   80,659.63/120,963.53 = 26,612.15/x
3. Step 3: Cross multiply
   80,659.63x = 120,963.53 × 26,612.15
4. Step 4: Simplify right side
   80,659.63x = 3,219,099,604.89
5. Step 5: Solve for x
   x = 3,219,099,604.89/80,659.63
6. Step 6: Final answer
   x = 39,909.68