Finding the Fourth Proportional to 404,978.08, 607,515.72 and 168,480.76

Step by Step Solution

1. Step 1: Write the proportion equation
   404,978.08 : 607,515.72 = 168,480.76 : x
2. Step 2: Convert to fraction form
   404,978.08/607,515.72 = 168,480.76/x
3. Step 3: Cross multiply
   404,978.08x = 607,515.72 × 168,480.76
4. Step 4: Simplify right side
   404,978.08x = 102,354,710,217.55
5. Step 5: Solve for x
   x = 102,354,710,217.55/404,978.08
6. Step 6: Final answer
   x = 252,741.36