Finding the Fourth Proportional to 498,942.72, 688,538.88 and 272,592

Step by Step Solution

1. Step 1: Write the proportion equation
   498,942.72 : 688,538.88 = 272,592 : x
2. Step 2: Convert to fraction form
   498,942.72/688,538.88 = 272,592/x
3. Step 3: Cross multiply
   498,942.72x = 688,538.88 × 272,592
4. Step 4: Simplify right side
   498,942.72x = 187,690,190,376.96
5. Step 5: Solve for x
   x = 187,690,190,376.96/498,942.72
6. Step 6: Final answer
   x = 376,175.83