Finding the Fourth Proportional to 260,978.71, 360,133.57 and 153,527.98

Step by Step Solution

1. Step 1: Write the proportion equation
   260,978.71 : 360,133.57 = 153,527.98 : x
2. Step 2: Convert to fraction form
   260,978.71/360,133.57 = 153,527.98/x
3. Step 3: Cross multiply
   260,978.71x = 360,133.57 × 153,527.98
4. Step 4: Simplify right side
   260,978.71x = 55,290,579,532.29
5. Step 5: Solve for x
   x = 55,290,579,532.29/260,978.71
6. Step 6: Final answer
   x = 211,858.58