Finding the Fourth Proportional to 259,597.72, 358,407.03 and 199,052.05

Step by Step Solution

1. Step 1: Write the proportion equation
   259,597.72 : 358,407.03 = 199,052.05 : x
2. Step 2: Convert to fraction form
   259,597.72/358,407.03 = 199,052.05/x
3. Step 3: Cross multiply
   259,597.72x = 358,407.03 × 199,052.05
4. Step 4: Simplify right side
   259,597.72x = 71,341,654,055.91
5. Step 5: Solve for x
   x = 71,341,654,055.91/259,597.72
6. Step 6: Final answer
   x = 274,816.18