Finding the Fourth Proportional to 113,715.31, 156,940.68 and 65,970.27

Step by Step Solution

1. Step 1: Write the proportion equation
   113,715.31 : 156,940.68 = 65,970.27 : x
2. Step 2: Convert to fraction form
   113,715.31/156,940.68 = 65,970.27/x
3. Step 3: Cross multiply
   113,715.31x = 156,940.68 × 65,970.27
4. Step 4: Simplify right side
   113,715.31x = 10,353,419,033.58
5. Step 5: Solve for x
   x = 10,353,419,033.58/113,715.31
6. Step 6: Final answer
   x = 91,046.83