Finding the Fourth Proportional to 116,426.50, 160,668.78 and 66,125.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,426.50 : 160,668.78 = 66,125.50 : x
2. Step 2: Convert to fraction form
   116,426.50/160,668.78 = 66,125.50/x
3. Step 3: Cross multiply
   116,426.50x = 160,668.78 × 66,125.50
4. Step 4: Simplify right side
   116,426.50x = 10,624,303,411.89
5. Step 5: Solve for x
   x = 10,624,303,411.89/116,426.50
6. Step 6: Final answer
   x = 91,253.31