Finding the Fourth Proportional to 260,978.28, 360,065.82 and 153,574.71

Step by Step Solution

1. Step 1: Write the proportion equation
   260,978.28 : 360,065.82 = 153,574.71 : x
2. Step 2: Convert to fraction form
   260,978.28/360,065.82 = 153,574.71/x
3. Step 3: Cross multiply
   260,978.28x = 360,065.82 × 153,574.71
4. Step 4: Simplify right side
   260,978.28x = 55,297,003,887.41
5. Step 5: Solve for x
   x = 55,297,003,887.41/260,978.28
6. Step 6: Final answer
   x = 211,883.55