Finding the Fourth Proportional to 329,822.72, 455,157.72 and 178,920.80

Step by Step Solution

1. Step 1: Write the proportion equation
   329,822.72 : 455,157.72 = 178,920.80 : x
2. Step 2: Convert to fraction form
   329,822.72/455,157.72 = 178,920.80/x
3. Step 3: Cross multiply
   329,822.72x = 455,157.72 × 178,920.80
4. Step 4: Simplify right side
   329,822.72x = 81,437,183,388.58
5. Step 5: Solve for x
   x = 81,437,183,388.58/329,822.72
6. Step 6: Final answer
   x = 246,911.99