Finding the Fourth Proportional to 276,812.72, 415,071.46 and 143,361.98

Step by Step Solution

1. Step 1: Write the proportion equation
   276,812.72 : 415,071.46 = 143,361.98 : x
2. Step 2: Convert to fraction form
   276,812.72/415,071.46 = 143,361.98/x
3. Step 3: Cross multiply
   276,812.72x = 415,071.46 × 143,361.98
4. Step 4: Simplify right side
   276,812.72x = 59,505,466,347.09
5. Step 5: Solve for x
   x = 59,505,466,347.09/276,812.72
6. Step 6: Final answer
   x = 214,966.52