Finding the Fourth Proportional to 558,004.10, 770,105.82 and 316,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   558,004.10 : 770,105.82 = 316,260.72 : x
2. Step 2: Convert to fraction form
   558,004.10/770,105.82 = 316,260.72/x
3. Step 3: Cross multiply
   558,004.10x = 770,105.82 × 316,260.72
4. Step 4: Simplify right side
   558,004.10x = 243,554,221,109.39
5. Step 5: Solve for x
   x = 243,554,221,109.39/558,004.10
6. Step 6: Final answer
   x = 436,473.90