Finding the Fourth Proportional to 116,385, 160,599.37 and 65,389.62

Step by Step Solution

1. Step 1: Write the proportion equation
   116,385 : 160,599.37 = 65,389.62 : x
2. Step 2: Convert to fraction form
   116,385/160,599.37 = 65,389.62/x
3. Step 3: Cross multiply
   116,385x = 160,599.37 × 65,389.62
4. Step 4: Simplify right side
   116,385x = 10,501,531,776.54
5. Step 5: Solve for x
   x = 10,501,531,776.54/116,385
6. Step 6: Final answer
   x = 90,230.97