Finding the Fourth Proportional to 31,643.60, 43,697.16 and 25,401.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,643.60 : 43,697.16 = 25,401.68 : x
2. Step 2: Convert to fraction form
   31,643.60/43,697.16 = 25,401.68/x
3. Step 3: Cross multiply
   31,643.60x = 43,697.16 × 25,401.68
4. Step 4: Simplify right side
   31,643.60x = 1,109,981,275.23
5. Step 5: Solve for x
   x = 1,109,981,275.23/31,643.60
6. Step 6: Final answer
   x = 35,077.59