Finding the Fourth Proportional to 588,994.72, 812,822.16 and 320,722.72

Step by Step Solution

1. Step 1: Write the proportion equation
   588,994.72 : 812,822.16 = 320,722.72 : x
2. Step 2: Convert to fraction form
   588,994.72/812,822.16 = 320,722.72/x
3. Step 3: Cross multiply
   588,994.72x = 812,822.16 × 320,722.72
4. Step 4: Simplify right side
   588,994.72x = 260,690,534,031.48
5. Step 5: Solve for x
   x = 260,690,534,031.48/588,994.72
6. Step 6: Final answer
   x = 442,602.50