Finding the Fourth Proportional to 116,679.34, 161,020.72 and 71,356.49

Step by Step Solution

1. Step 1: Write the proportion equation
   116,679.34 : 161,020.72 = 71,356.49 : x
2. Step 2: Convert to fraction form
   116,679.34/161,020.72 = 71,356.49/x
3. Step 3: Cross multiply
   116,679.34x = 161,020.72 × 71,356.49
4. Step 4: Simplify right side
   116,679.34x = 11,489,874,290.48
5. Step 5: Solve for x
   x = 11,489,874,290.48/116,679.34
6. Step 6: Final answer
   x = 98,473.94