Finding the Fourth Proportional to 116,629.30, 160,953.60 and 65,645.31

Step by Step Solution

1. Step 1: Write the proportion equation
   116,629.30 : 160,953.60 = 65,645.31 : x
2. Step 2: Convert to fraction form
   116,629.30/160,953.60 = 65,645.31/x
3. Step 3: Cross multiply
   116,629.30x = 160,953.60 × 65,645.31
4. Step 4: Simplify right side
   116,629.30x = 10,565,849,817.36
5. Step 5: Solve for x
   x = 10,565,849,817.36/116,629.30
6. Step 6: Final answer
   x = 90,593.44