Finding the Fourth Proportional to 31,275.77, 43,161.59 and 17,129.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,275.77 : 43,161.59 = 17,129.39 : x
2. Step 2: Convert to fraction form
   31,275.77/43,161.59 = 17,129.39/x
3. Step 3: Cross multiply
   31,275.77x = 43,161.59 × 17,129.39
4. Step 4: Simplify right side
   31,275.77x = 739,331,535.15
5. Step 5: Solve for x
   x = 739,331,535.15/31,275.77
6. Step 6: Final answer
   x = 23,639.12