Finding the Fourth Proportional to 161,647.40, 223,064.73 and 89,047.91

Step by Step Solution

1. Step 1: Write the proportion equation
   161,647.40 : 223,064.73 = 89,047.91 : x
2. Step 2: Convert to fraction form
   161,647.40/223,064.73 = 89,047.91/x
3. Step 3: Cross multiply
   161,647.40x = 223,064.73 × 89,047.91
4. Step 4: Simplify right side
   161,647.40x = 19,863,446,885.89
5. Step 5: Solve for x
   x = 19,863,446,885.89/161,647.40
6. Step 6: Final answer
   x = 122,881.33