Finding the Fourth Proportional to 290,112.76, 400,384.38 and 194,817.88

Step by Step Solution

1. Step 1: Write the proportion equation
   290,112.76 : 400,384.38 = 194,817.88 : x
2. Step 2: Convert to fraction form
   290,112.76/400,384.38 = 194,817.88/x
3. Step 3: Cross multiply
   290,112.76x = 400,384.38 × 194,817.88
4. Step 4: Simplify right side
   290,112.76x = 78,002,036,096.71
5. Step 5: Solve for x
   x = 78,002,036,096.71/290,112.76
6. Step 6: Final answer
   x = 268,867.99