Finding the Fourth Proportional to 404,746.86, 558,031.47 and 331,881.30

Step by Step Solution

1. Step 1: Write the proportion equation
   404,746.86 : 558,031.47 = 331,881.30 : x
2. Step 2: Convert to fraction form
   404,746.86/558,031.47 = 331,881.30/x
3. Step 3: Cross multiply
   404,746.86x = 558,031.47 × 331,881.30
4. Step 4: Simplify right side
   404,746.86x = 185,200,209,704.51
5. Step 5: Solve for x
   x = 185,200,209,704.51/404,746.86
6. Step 6: Final answer
   x = 457,570.47