Finding the Fourth Proportional to 260,620.50, 359,653.86 and 147,443.25

Step by Step Solution

1. Step 1: Write the proportion equation
   260,620.50 : 359,653.86 = 147,443.25 : x
2. Step 2: Convert to fraction form
   260,620.50/359,653.86 = 147,443.25/x
3. Step 3: Cross multiply
   260,620.50x = 359,653.86 × 147,443.25
4. Step 4: Simplify right side
   260,620.50x = 53,028,533,993.45
5. Step 5: Solve for x
   x = 53,028,533,993.45/260,620.50
6. Step 6: Final answer
   x = 203,470.31