Finding the Fourth Proportional to 258,111.77, 356,182.69 and 143,397.81

Step by Step Solution

1. Step 1: Write the proportion equation
   258,111.77 : 356,182.69 = 143,397.81 : x
2. Step 2: Convert to fraction form
   258,111.77/356,182.69 = 143,397.81/x
3. Step 3: Cross multiply
   258,111.77x = 356,182.69 × 143,397.81
4. Step 4: Simplify right side
   258,111.77x = 51,075,817,705.91
5. Step 5: Solve for x
   x = 51,075,817,705.91/258,111.77
6. Step 6: Final answer
   x = 197,882.56