Finding the Fourth Proportional to 162,242.72, 223,893.57 and 89,645.37

Step by Step Solution

1. Step 1: Write the proportion equation
   162,242.72 : 223,893.57 = 89,645.37 : x
2. Step 2: Convert to fraction form
   162,242.72/223,893.57 = 89,645.37/x
3. Step 3: Cross multiply
   162,242.72x = 223,893.57 × 89,645.37
4. Step 4: Simplify right side
   162,242.72x = 20,071,021,923.27
5. Step 5: Solve for x
   x = 20,071,021,923.27/162,242.72
6. Step 6: Final answer
   x = 123,709.85