Finding the Fourth Proportional to 80,106.98, 120,231.74 and 42,697.94

Step by Step Solution

1. Step 1: Write the proportion equation
   80,106.98 : 120,231.74 = 42,697.94 : x
2. Step 2: Convert to fraction form
   80,106.98/120,231.74 = 42,697.94/x
3. Step 3: Cross multiply
   80,106.98x = 120,231.74 × 42,697.94
4. Step 4: Simplify right side
   80,106.98x = 5,133,647,126.20
5. Step 5: Solve for x
   x = 5,133,647,126.20/80,106.98
6. Step 6: Final answer
   x = 64,084.90