Finding the Fourth Proportional to 50,748.72, 76,210.20 and 31,142.40

Step by Step Solution

1. Step 1: Write the proportion equation
   50,748.72 : 76,210.20 = 31,142.40 : x
2. Step 2: Convert to fraction form
   50,748.72/76,210.20 = 31,142.40/x
3. Step 3: Cross multiply
   50,748.72x = 76,210.20 × 31,142.40
4. Step 4: Simplify right side
   50,748.72x = 2,373,368,532.48
5. Step 5: Solve for x
   x = 2,373,368,532.48/50,748.72
6. Step 6: Final answer
   x = 46,767.06