Finding the Fourth Proportional to 42,402.05, 63,528.24 and 25,728.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,402.05 : 63,528.24 = 25,728.23 : x
2. Step 2: Convert to fraction form
   42,402.05/63,528.24 = 25,728.23/x
3. Step 3: Cross multiply
   42,402.05x = 63,528.24 × 25,728.23
4. Step 4: Simplify right side
   42,402.05x = 1,634,469,170.22
5. Step 5: Solve for x
   x = 1,634,469,170.22/42,402.05
6. Step 6: Final answer
   x = 38,546.94