Finding the Fourth Proportional to 276,141.71, 381,080.73 and 161,430.15

Step by Step Solution

1. Step 1: Write the proportion equation
   276,141.71 : 381,080.73 = 161,430.15 : x
2. Step 2: Convert to fraction form
   276,141.71/381,080.73 = 161,430.15/x
3. Step 3: Cross multiply
   276,141.71x = 381,080.73 × 161,430.15
4. Step 4: Simplify right side
   276,141.71x = 61,517,919,406.01
5. Step 5: Solve for x
   x = 61,517,919,406.01/276,141.71
6. Step 6: Final answer
   x = 222,776.63