Finding the Fourth Proportional to 80,118.33, 120,249.72 and 42,709.56

Step by Step Solution

1. Step 1: Write the proportion equation
   80,118.33 : 120,249.72 = 42,709.56 : x
2. Step 2: Convert to fraction form
   80,118.33/120,249.72 = 42,709.56/x
3. Step 3: Cross multiply
   80,118.33x = 120,249.72 × 42,709.56
4. Step 4: Simplify right side
   80,118.33x = 5,135,812,631.32
5. Step 5: Solve for x
   x = 5,135,812,631.32/80,118.33
6. Step 6: Final answer
   x = 64,102.84