Finding the Fourth Proportional to 290,148.89, 400,434.23 and 162,824.99

Step by Step Solution

1. Step 1: Write the proportion equation
   290,148.89 : 400,434.23 = 162,824.99 : x
2. Step 2: Convert to fraction form
   290,148.89/400,434.23 = 162,824.99/x
3. Step 3: Cross multiply
   290,148.89x = 400,434.23 × 162,824.99
4. Step 4: Simplify right side
   290,148.89x = 65,200,697,900.30
5. Step 5: Solve for x
   x = 65,200,697,900.30/290,148.89
6. Step 6: Final answer
   x = 224,714.63