Finding the Fourth Proportional to 276,061.84, 380,978.84 and 155,241.16

Step by Step Solution

1. Step 1: Write the proportion equation
   276,061.84 : 380,978.84 = 155,241.16 : x
2. Step 2: Convert to fraction form
   276,061.84/380,978.84 = 155,241.16/x
3. Step 3: Cross multiply
   276,061.84x = 380,978.84 × 155,241.16
4. Step 4: Simplify right side
   276,061.84x = 59,143,597,057.05
5. Step 5: Solve for x
   x = 59,143,597,057.05/276,061.84
6. Step 6: Final answer
   x = 214,240.39