Finding the Fourth Proportional to 117,061.91, 161,545.25 and 66,085.37

Step by Step Solution

1. Step 1: Write the proportion equation
   117,061.91 : 161,545.25 = 66,085.37 : x
2. Step 2: Convert to fraction form
   117,061.91/161,545.25 = 66,085.37/x
3. Step 3: Cross multiply
   117,061.91x = 161,545.25 × 66,085.37
4. Step 4: Simplify right side
   117,061.91x = 10,675,777,287.57
5. Step 5: Solve for x
   x = 10,675,777,287.57/117,061.91
6. Step 6: Final answer
   x = 91,197.70