Finding the Fourth Proportional to 258,661.05, 356,983.32 and 156,683.52

Step by Step Solution

1. Step 1: Write the proportion equation
   258,661.05 : 356,983.32 = 156,683.52 : x
2. Step 2: Convert to fraction form
   258,661.05/356,983.32 = 156,683.52/x
3. Step 3: Cross multiply
   258,661.05x = 356,983.32 × 156,683.52
4. Step 4: Simplify right side
   258,661.05x = 55,933,403,158.89
5. Step 5: Solve for x
   x = 55,933,403,158.89/258,661.05
6. Step 6: Final answer
   x = 216,242.08