Finding the Fourth Proportional to 353,105.52, 487,279.80 and 191,964.56

Step by Step Solution

1. Step 1: Write the proportion equation
   353,105.52 : 487,279.80 = 191,964.56 : x
2. Step 2: Convert to fraction form
   353,105.52/487,279.80 = 191,964.56/x
3. Step 3: Cross multiply
   353,105.52x = 487,279.80 × 191,964.56
4. Step 4: Simplify right side
   353,105.52x = 93,540,452,403.89
5. Step 5: Solve for x
   x = 93,540,452,403.89/353,105.52
6. Step 6: Final answer
   x = 264,907.93