Finding the Fourth Proportional to 31,272, 43,155.30 and 17,124.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,272 : 43,155.30 = 17,124.96 : x
2. Step 2: Convert to fraction form
   31,272/43,155.30 = 17,124.96/x
3. Step 3: Cross multiply
   31,272x = 43,155.30 × 17,124.96
4. Step 4: Simplify right side
   31,272x = 739,032,786.29
5. Step 5: Solve for x
   x = 739,032,786.29/31,272
6. Step 6: Final answer
   x = 23,632.41