Finding the Fourth Proportional to 31,086.29, 42,824.02 and 25,686.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,086.29 : 42,824.02 = 25,686.22 : x
2. Step 2: Convert to fraction form
   31,086.29/42,824.02 = 25,686.22/x
3. Step 3: Cross multiply
   31,086.29x = 42,824.02 × 25,686.22
4. Step 4: Simplify right side
   31,086.29x = 1,099,987,199.00
5. Step 5: Solve for x
   x = 1,099,987,199.00/31,086.29
6. Step 6: Final answer
   x = 35,384.96