Finding the Fourth Proportional to 31,641.98, 47,431.94 and 17,608.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,641.98 : 47,431.94 = 17,608.72 : x
2. Step 2: Convert to fraction form
   31,641.98/47,431.94 = 17,608.72/x
3. Step 3: Cross multiply
   31,641.98x = 47,431.94 × 17,608.72
4. Step 4: Simplify right side
   31,641.98x = 835,215,750.52
5. Step 5: Solve for x
   x = 835,215,750.52/31,641.98
6. Step 6: Final answer
   x = 26,395.81