Finding the Fourth Proportional to 67,431.35, 101,114.72 and 31,863.07

Step by Step Solution

1. Step 1: Write the proportion equation
   67,431.35 : 101,114.72 = 31,863.07 : x
2. Step 2: Convert to fraction form
   67,431.35/101,114.72 = 31,863.07/x
3. Step 3: Cross multiply
   67,431.35x = 101,114.72 × 31,863.07
4. Step 4: Simplify right side
   67,431.35x = 3,221,825,401.39
5. Step 5: Solve for x
   x = 3,221,825,401.39/67,431.35
6. Step 6: Final answer
   x = 47,779.34