Finding the Fourth Proportional to 31,104.48, 42,824.25 and 27,685.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.48 : 42,824.25 = 27,685.20 : x
2. Step 2: Convert to fraction form
   31,104.48/42,824.25 = 27,685.20/x
3. Step 3: Cross multiply
   31,104.48x = 42,824.25 × 27,685.20
4. Step 4: Simplify right side
   31,104.48x = 1,185,597,926.10
5. Step 5: Solve for x
   x = 1,185,597,926.10/31,104.48
6. Step 6: Final answer
   x = 38,116.63