Finding the Fourth Proportional to 161,662.55, 223,085.48 and 89,051.31

Step by Step Solution

1. Step 1: Write the proportion equation
   161,662.55 : 223,085.48 = 89,051.31 : x
2. Step 2: Convert to fraction form
   161,662.55/223,085.48 = 89,051.31/x
3. Step 3: Cross multiply
   161,662.55x = 223,085.48 × 89,051.31
4. Step 4: Simplify right side
   161,662.55x = 19,866,053,790.72
5. Step 5: Solve for x
   x = 19,866,053,790.72/161,662.55
6. Step 6: Final answer
   x = 122,885.94