Finding the Fourth Proportional to 50,976.42, 76,378.34 and 31,213.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,976.42 : 76,378.34 = 31,213.72 : x
2. Step 2: Convert to fraction form
   50,976.42/76,378.34 = 31,213.72/x
3. Step 3: Cross multiply
   50,976.42x = 76,378.34 × 31,213.72
4. Step 4: Simplify right side
   50,976.42x = 2,384,052,118.82
5. Step 5: Solve for x
   x = 2,384,052,118.82/50,976.42
6. Step 6: Final answer
   x = 46,767.74