Finding the Fourth Proportional to 213,253.56, 319,878.72 and 88,594.56

Step by Step Solution

1. Step 1: Write the proportion equation
   213,253.56 : 319,878.72 = 88,594.56 : x
2. Step 2: Convert to fraction form
   213,253.56/319,878.72 = 88,594.56/x
3. Step 3: Cross multiply
   213,253.56x = 319,878.72 × 88,594.56
4. Step 4: Simplify right side
   213,253.56x = 28,339,514,451.76
5. Step 5: Solve for x
   x = 28,339,514,451.76/213,253.56
6. Step 6: Final answer
   x = 132,891.17