Finding the Fourth Proportional to 56,942.32, 78,581.46 and 31,450

Step by Step Solution

1. Step 1: Write the proportion equation
   56,942.32 : 78,581.46 = 31,450 : x
2. Step 2: Convert to fraction form
   56,942.32/78,581.46 = 31,450/x
3. Step 3: Cross multiply
   56,942.32x = 78,581.46 × 31,450
4. Step 4: Simplify right side
   56,942.32x = 2,471,386,917
5. Step 5: Solve for x
   x = 2,471,386,917/56,942.32
6. Step 6: Final answer
   x = 43,401.58