Finding the Fourth Proportional to 30,806.48, 42,502.50 and 25,131.41

Step by Step Solution

1. Step 1: Write the proportion equation
   30,806.48 : 42,502.50 = 25,131.41 : x
2. Step 2: Convert to fraction form
   30,806.48/42,502.50 = 25,131.41/x
3. Step 3: Cross multiply
   30,806.48x = 42,502.50 × 25,131.41
4. Step 4: Simplify right side
   30,806.48x = 1,068,147,868.79
5. Step 5: Solve for x
   x = 1,068,147,868.79/30,806.48
6. Step 6: Final answer
   x = 34,672.83