Finding the Fourth Proportional to 259,501.55, 358,121.03 and 150,597.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,501.55 : 358,121.03 = 150,597.50 : x
2. Step 2: Convert to fraction form
   259,501.55/358,121.03 = 150,597.50/x
3. Step 3: Cross multiply
   259,501.55x = 358,121.03 × 150,597.50
4. Step 4: Simplify right side
   259,501.55x = 53,932,129,271.83
5. Step 5: Solve for x
   x = 53,932,129,271.83/259,501.55
6. Step 6: Final answer
   x = 207,829.70