Finding the Fourth Proportional to 116,643.52, 160,966.14 and 64,960.12

Step by Step Solution

1. Step 1: Write the proportion equation
   116,643.52 : 160,966.14 = 64,960.12 : x
2. Step 2: Convert to fraction form
   116,643.52/160,966.14 = 64,960.12/x
3. Step 3: Cross multiply
   116,643.52x = 160,966.14 × 64,960.12
4. Step 4: Simplify right side
   116,643.52x = 10,456,379,770.34
5. Step 5: Solve for x
   x = 10,456,379,770.34/116,643.52
6. Step 6: Final answer
   x = 89,643.90