Finding the Fourth Proportional to 282,523.56, 389,588.56 and 210,789.96

Step by Step Solution

1. Step 1: Write the proportion equation
   282,523.56 : 389,588.56 = 210,789.96 : x
2. Step 2: Convert to fraction form
   282,523.56/389,588.56 = 210,789.96/x
3. Step 3: Cross multiply
   282,523.56x = 389,588.56 × 210,789.96
4. Step 4: Simplify right side
   282,523.56x = 82,121,356,978.86
5. Step 5: Solve for x
   x = 82,121,356,978.86/282,523.56
6. Step 6: Final answer
   x = 290,670.83