Finding the Fourth Proportional to 259,535.80, 358,091.61 and 152,048.05

Step by Step Solution

1. Step 1: Write the proportion equation
   259,535.80 : 358,091.61 = 152,048.05 : x
2. Step 2: Convert to fraction form
   259,535.80/358,091.61 = 152,048.05/x
3. Step 3: Cross multiply
   259,535.80x = 358,091.61 × 152,048.05
4. Step 4: Simplify right side
   259,535.80x = 54,447,131,021.86
5. Step 5: Solve for x
   x = 54,447,131,021.86/259,535.80
6. Step 6: Final answer
   x = 209,786.59