Finding the Fourth Proportional to 72,863.72, 109,273.98 and 31,301

Step by Step Solution

1. Step 1: Write the proportion equation
   72,863.72 : 109,273.98 = 31,301 : x
2. Step 2: Convert to fraction form
   72,863.72/109,273.98 = 31,301/x
3. Step 3: Cross multiply
   72,863.72x = 109,273.98 × 31,301
4. Step 4: Simplify right side
   72,863.72x = 3,420,384,847.98
5. Step 5: Solve for x
   x = 3,420,384,847.98/72,863.72
6. Step 6: Final answer
   x = 46,942.22