Finding the Fourth Proportional to 295,622.72, 407,958.72 and 161,486.72

Step by Step Solution

1. Step 1: Write the proportion equation
   295,622.72 : 407,958.72 = 161,486.72 : x
2. Step 2: Convert to fraction form
   295,622.72/407,958.72 = 161,486.72/x
3. Step 3: Cross multiply
   295,622.72x = 407,958.72 × 161,486.72
4. Step 4: Simplify right side
   295,622.72x = 65,879,915,588.20
5. Step 5: Solve for x
   x = 65,879,915,588.20/295,622.72
6. Step 6: Final answer
   x = 222,851.33