Finding the Fourth Proportional to 421,077.72, 581,080.24 and 230,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   421,077.72 : 581,080.24 = 230,086.72 : x
2. Step 2: Convert to fraction form
   421,077.72/581,080.24 = 230,086.72/x
3. Step 3: Cross multiply
   421,077.72x = 581,080.24 × 230,086.72
4. Step 4: Simplify right side
   421,077.72x = 133,698,846,478.41
5. Step 5: Solve for x
   x = 133,698,846,478.41/421,077.72
6. Step 6: Final answer
   x = 317,515.84