Finding the Fourth Proportional to 355,132.42, 490,082.72 and 191,788.91

Step by Step Solution

1. Step 1: Write the proportion equation
   355,132.42 : 490,082.72 = 191,788.91 : x
2. Step 2: Convert to fraction form
   355,132.42/490,082.72 = 191,788.91/x
3. Step 3: Cross multiply
   355,132.42x = 490,082.72 × 191,788.91
4. Step 4: Simplify right side
   355,132.42x = 93,992,429,719.69
5. Step 5: Solve for x
   x = 93,992,429,719.69/355,132.42
6. Step 6: Final answer
   x = 264,668.68