Finding the Fourth Proportional to 161,682.72, 223,139.73 and 89,093.10

Step by Step Solution

1. Step 1: Write the proportion equation
   161,682.72 : 223,139.73 = 89,093.10 : x
2. Step 2: Convert to fraction form
   161,682.72/223,139.73 = 89,093.10/x
3. Step 3: Cross multiply
   161,682.72x = 223,139.73 × 89,093.10
4. Step 4: Simplify right side
   161,682.72x = 19,880,210,278.86
5. Step 5: Solve for x
   x = 19,880,210,278.86/161,682.72
6. Step 6: Final answer
   x = 122,958.16