Finding the Fourth Proportional to 290,499.35, 400,926.69 and 163,174.91

Step by Step Solution

1. Step 1: Write the proportion equation
   290,499.35 : 400,926.69 = 163,174.91 : x
2. Step 2: Convert to fraction form
   290,499.35/400,926.69 = 163,174.91/x
3. Step 3: Cross multiply
   290,499.35x = 400,926.69 × 163,174.91
4. Step 4: Simplify right side
   290,499.35x = 65,421,174,552.71
5. Step 5: Solve for x
   x = 65,421,174,552.71/290,499.35
6. Step 6: Final answer
   x = 225,202.49