Finding the Fourth Proportional to 71,910.94, 107,828.42 and 31,912.56

Step by Step Solution

1. Step 1: Write the proportion equation
   71,910.94 : 107,828.42 = 31,912.56 : x
2. Step 2: Convert to fraction form
   71,910.94/107,828.42 = 31,912.56/x
3. Step 3: Cross multiply
   71,910.94x = 107,828.42 × 31,912.56
4. Step 4: Simplify right side
   71,910.94x = 3,441,080,922.96
5. Step 5: Solve for x
   x = 3,441,080,922.96/71,910.94
6. Step 6: Final answer
   x = 47,851.98