Finding the Fourth Proportional to 282,524.09, 389,985.60 and 187,061.54

Step by Step Solution

1. Step 1: Write the proportion equation
   282,524.09 : 389,985.60 = 187,061.54 : x
2. Step 2: Convert to fraction form
   282,524.09/389,985.60 = 187,061.54/x
3. Step 3: Cross multiply
   282,524.09x = 389,985.60 × 187,061.54
4. Step 4: Simplify right side
   282,524.09x = 72,951,305,978.52
5. Step 5: Solve for x
   x = 72,951,305,978.52/282,524.09
6. Step 6: Final answer
   x = 258,212.69