Finding the Fourth Proportional to 116,650.81, 160,981.74 and 66,353.05

Step by Step Solution

1. Step 1: Write the proportion equation
   116,650.81 : 160,981.74 = 66,353.05 : x
2. Step 2: Convert to fraction form
   116,650.81/160,981.74 = 66,353.05/x
3. Step 3: Cross multiply
   116,650.81x = 160,981.74 × 66,353.05
4. Step 4: Simplify right side
   116,650.81x = 10,681,629,443.31
5. Step 5: Solve for x
   x = 10,681,629,443.31/116,650.81
6. Step 6: Final answer
   x = 91,569.27