Finding the Fourth Proportional to 320,648.96, 442,492.16 and 177,402.88

Step by Step Solution

1. Step 1: Write the proportion equation
   320,648.96 : 442,492.16 = 177,402.88 : x
2. Step 2: Convert to fraction form
   320,648.96/442,492.16 = 177,402.88/x
3. Step 3: Cross multiply
   320,648.96x = 442,492.16 × 177,402.88
4. Step 4: Simplify right side
   320,648.96x = 78,499,383,561.42
5. Step 5: Solve for x
   x = 78,499,383,561.42/320,648.96
6. Step 6: Final answer
   x = 244,814.09