Finding the Fourth Proportional to 275,826.06, 380,678.33 and 154,976.69

Step by Step Solution

1. Step 1: Write the proportion equation
   275,826.06 : 380,678.33 = 154,976.69 : x
2. Step 2: Convert to fraction form
   275,826.06/380,678.33 = 154,976.69/x
3. Step 3: Cross multiply
   275,826.06x = 380,678.33 × 154,976.69
4. Step 4: Simplify right side
   275,826.06x = 58,996,268,877.27
5. Step 5: Solve for x
   x = 58,996,268,877.27/275,826.06
6. Step 6: Final answer
   x = 213,889.39