Finding the Fourth Proportional to 499,123.89, 688,796.06 and 272,769.39

Step by Step Solution

1. Step 1: Write the proportion equation
   499,123.89 : 688,796.06 = 272,769.39 : x
2. Step 2: Convert to fraction form
   499,123.89/688,796.06 = 272,769.39/x
3. Step 3: Cross multiply
   499,123.89x = 688,796.06 × 272,769.39
4. Step 4: Simplify right side
   499,123.89x = 187,882,479,756.76
5. Step 5: Solve for x
   x = 187,882,479,756.76/499,123.89
6. Step 6: Final answer
   x = 376,424.54