Finding the Fourth Proportional to 311,732.72, 430,191.06 and 168,492.72

Step by Step Solution

1. Step 1: Write the proportion equation
   311,732.72 : 430,191.06 = 168,492.72 : x
2. Step 2: Convert to fraction form
   311,732.72/430,191.06 = 168,492.72/x
3. Step 3: Cross multiply
   311,732.72x = 430,191.06 × 168,492.72
4. Step 4: Simplify right side
   311,732.72x = 72,484,061,819.08
5. Step 5: Solve for x
   x = 72,484,061,819.08/311,732.72
6. Step 6: Final answer
   x = 232,519.90