Finding the Fourth Proportional to 300,068.22, 414,244.72 and 231,931.21

Step by Step Solution

1. Step 1: Write the proportion equation
   300,068.22 : 414,244.72 = 231,931.21 : x
2. Step 2: Convert to fraction form
   300,068.22/414,244.72 = 231,931.21/x
3. Step 3: Cross multiply
   300,068.22x = 414,244.72 × 231,931.21
4. Step 4: Simplify right side
   300,068.22x = 96,076,279,433.10
5. Step 5: Solve for x
   x = 96,076,279,433.10/300,068.22
6. Step 6: Final answer
   x = 320,181.45