Finding the Fourth Proportional to 20,185.55, 30,467.91 and 20,185.55

Step by Step Solution

1. Step 1: Write the proportion equation
   20,185.55 : 30,467.91 = 20,185.55 : x
2. Step 2: Convert to fraction form
   20,185.55/30,467.91 = 20,185.55/x
3. Step 3: Cross multiply
   20,185.55x = 30,467.91 × 20,185.55
4. Step 4: Simplify right side
   20,185.55x = 615,011,644.54
5. Step 5: Solve for x
   x = 615,011,644.54/20,185.55
6. Step 6: Final answer
   x = 30,467.91