Finding the Fourth Proportional to 49,861.91, 74,617.31 and 31,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   49,861.91 : 74,617.31 = 31,150.78 : x
2. Step 2: Convert to fraction form
   49,861.91/74,617.31 = 31,150.78/x
3. Step 3: Cross multiply
   49,861.91x = 74,617.31 × 31,150.78
4. Step 4: Simplify right side
   49,861.91x = 2,324,387,299.34
5. Step 5: Solve for x
   x = 2,324,387,299.34/49,861.91
6. Step 6: Final answer
   x = 46,616.49