Finding the Fourth Proportional to 213,019.52, 318,828.96 and 189,691.52

Step by Step Solution

1. Step 1: Write the proportion equation
   213,019.52 : 318,828.96 = 189,691.52 : x
2. Step 2: Convert to fraction form
   213,019.52/318,828.96 = 189,691.52/x
3. Step 3: Cross multiply
   213,019.52x = 318,828.96 × 189,691.52
4. Step 4: Simplify right side
   213,019.52x = 60,479,150,042.42
5. Step 5: Solve for x
   x = 60,479,150,042.42/213,019.52
6. Step 6: Final answer
   x = 283,913.65