Finding the Fourth Proportional to 41,990.94, 57,951.59 and 31,362.12

Step by Step Solution

1. Step 1: Write the proportion equation
   41,990.94 : 57,951.59 = 31,362.12 : x
2. Step 2: Convert to fraction form
   41,990.94/57,951.59 = 31,362.12/x
3. Step 3: Cross multiply
   41,990.94x = 57,951.59 × 31,362.12
4. Step 4: Simplify right side
   41,990.94x = 1,817,484,719.77
5. Step 5: Solve for x
   x = 1,817,484,719.77/41,990.94
6. Step 6: Final answer
   x = 43,282.78