Finding the Fourth Proportional to 30,807.42, 42,521.22 and 25,762.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,807.42 : 42,521.22 = 25,762.88 : x
2. Step 2: Convert to fraction form
   30,807.42/42,521.22 = 25,762.88/x
3. Step 3: Cross multiply
   30,807.42x = 42,521.22 × 25,762.88
4. Step 4: Simplify right side
   30,807.42x = 1,095,469,088.31
5. Step 5: Solve for x
   x = 1,095,469,088.31/30,807.42
6. Step 6: Final answer
   x = 35,558.61