Finding the Fourth Proportional to 30,809.42, 42,523.98 and 25,764.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,809.42 : 42,523.98 = 25,764.88 : x
2. Step 2: Convert to fraction form
   30,809.42/42,523.98 = 25,764.88/x
3. Step 3: Cross multiply
   30,809.42x = 42,523.98 × 25,764.88
4. Step 4: Simplify right side
   30,809.42x = 1,095,625,241.82
5. Step 5: Solve for x
   x = 1,095,625,241.82/30,809.42
6. Step 6: Final answer
   x = 35,561.37