Finding the Fourth Proportional to 116,997.34, 161,456.16 and 66,010

Step by Step Solution

1. Step 1: Write the proportion equation
   116,997.34 : 161,456.16 = 66,010 : x
2. Step 2: Convert to fraction form
   116,997.34/161,456.16 = 66,010/x
3. Step 3: Cross multiply
   116,997.34x = 161,456.16 × 66,010
4. Step 4: Simplify right side
   116,997.34x = 10,657,721,121.60
5. Step 5: Solve for x
   x = 10,657,721,121.60/116,997.34
6. Step 6: Final answer
   x = 91,093.70