Finding the Fourth Proportional to 49,302.72, 68,087.46 and 31,405.74

Step by Step Solution

1. Step 1: Write the proportion equation
   49,302.72 : 68,087.46 = 31,405.74 : x
2. Step 2: Convert to fraction form
   49,302.72/68,087.46 = 31,405.74/x
3. Step 3: Cross multiply
   49,302.72x = 68,087.46 × 31,405.74
4. Step 4: Simplify right side
   49,302.72x = 2,138,337,066.02
5. Step 5: Solve for x
   x = 2,138,337,066.02/49,302.72
6. Step 6: Final answer
   x = 43,371.58