Finding the Fourth Proportional to 359,663.88, 496,300.74 and 198,508.56

Step by Step Solution

1. Step 1: Write the proportion equation
   359,663.88 : 496,300.74 = 198,508.56 : x
2. Step 2: Convert to fraction form
   359,663.88/496,300.74 = 198,508.56/x
3. Step 3: Cross multiply
   359,663.88x = 496,300.74 × 198,508.56
4. Step 4: Simplify right side
   359,663.88x = 98,519,945,224.33
5. Step 5: Solve for x
   x = 98,519,945,224.33/359,663.88
6. Step 6: Final answer
   x = 273,922.27