Finding the Fourth Proportional to 398,185.52, 549,496.04 and 219,337.52

Step by Step Solution

1. Step 1: Write the proportion equation
   398,185.52 : 549,496.04 = 219,337.52 : x
2. Step 2: Convert to fraction form
   398,185.52/549,496.04 = 219,337.52/x
3. Step 3: Cross multiply
   398,185.52x = 549,496.04 × 219,337.52
4. Step 4: Simplify right side
   398,185.52x = 120,525,098,663.42
5. Step 5: Solve for x
   x = 120,525,098,663.42/398,185.52
6. Step 6: Final answer
   x = 302,685.79