Finding the Fourth Proportional to 275,921.79, 380,805.89 and 155,068.17

Step by Step Solution

1. Step 1: Write the proportion equation
   275,921.79 : 380,805.89 = 155,068.17 : x
2. Step 2: Convert to fraction form
   275,921.79/380,805.89 = 155,068.17/x
3. Step 3: Cross multiply
   275,921.79x = 380,805.89 × 155,068.17
4. Step 4: Simplify right side
   275,921.79x = 59,050,872,487.52
5. Step 5: Solve for x
   x = 59,050,872,487.52/275,921.79
6. Step 6: Final answer
   x = 214,013.08