Finding the Fourth Proportional to 80,208.95, 120,271.90 and 42,758.97

Step by Step Solution

1. Step 1: Write the proportion equation
   80,208.95 : 120,271.90 = 42,758.97 : x
2. Step 2: Convert to fraction form
   80,208.95/120,271.90 = 42,758.97/x
3. Step 3: Cross multiply
   80,208.95x = 120,271.90 × 42,758.97
4. Step 4: Simplify right side
   80,208.95x = 5,142,701,748.79
5. Step 5: Solve for x
   x = 5,142,701,748.79/80,208.95
6. Step 6: Final answer
   x = 64,116.31