Finding the Fourth Proportional to 80,795.32, 120,965.15 and 42,758.43

Step by Step Solution

1. Step 1: Write the proportion equation
   80,795.32 : 120,965.15 = 42,758.43 : x
2. Step 2: Convert to fraction form
   80,795.32/120,965.15 = 42,758.43/x
3. Step 3: Cross multiply
   80,795.32x = 120,965.15 × 42,758.43
4. Step 4: Simplify right side
   80,795.32x = 5,172,279,991.90
5. Step 5: Solve for x
   x = 5,172,279,991.90/80,795.32
6. Step 6: Final answer
   x = 64,017.07