Finding the Fourth Proportional to 276,123.48, 413,643.92 and 143,091

Step by Step Solution

1. Step 1: Write the proportion equation
   276,123.48 : 413,643.92 = 143,091 : x
2. Step 2: Convert to fraction form
   276,123.48/413,643.92 = 143,091/x
3. Step 3: Cross multiply
   276,123.48x = 413,643.92 × 143,091
4. Step 4: Simplify right side
   276,123.48x = 59,188,722,156.72
5. Step 5: Solve for x
   x = 59,188,722,156.72/276,123.48
6. Step 6: Final answer
   x = 214,355.99