Finding the Fourth Proportional to 31,257, 43,134.71 and 17,109.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,257 : 43,134.71 = 17,109.86 : x
2. Step 2: Convert to fraction form
   31,257/43,134.71 = 17,109.86/x
3. Step 3: Cross multiply
   31,257x = 43,134.71 × 17,109.86
4. Step 4: Simplify right side
   31,257x = 738,028,548.02
5. Step 5: Solve for x
   x = 738,028,548.02/31,257
6. Step 6: Final answer
   x = 23,611.62