Finding the Fourth Proportional to 50,186.62, 69,256.50 and 31,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   50,186.62 : 69,256.50 = 31,061.31 : x
2. Step 2: Convert to fraction form
   50,186.62/69,256.50 = 31,061.31/x
3. Step 3: Cross multiply
   50,186.62x = 69,256.50 × 31,061.31
4. Step 4: Simplify right side
   50,186.62x = 2,151,197,616.02
5. Step 5: Solve for x
   x = 2,151,197,616.02/50,186.62
6. Step 6: Final answer
   x = 42,863.97