Finding the Fourth Proportional to 71,834.86, 107,789.20 and 31,881.22

Step by Step Solution

1. Step 1: Write the proportion equation
   71,834.86 : 107,789.20 = 31,881.22 : x
2. Step 2: Convert to fraction form
   71,834.86/107,789.20 = 31,881.22/x
3. Step 3: Cross multiply
   71,834.86x = 107,789.20 × 31,881.22
4. Step 4: Simplify right side
   71,834.86x = 3,436,451,198.82
5. Step 5: Solve for x
   x = 3,436,451,198.82/71,834.86
6. Step 6: Final answer
   x = 47,838.21