Finding the Fourth Proportional to 113,578.23, 156,732.98 and 65,145.60

Step by Step Solution

1. Step 1: Write the proportion equation
   113,578.23 : 156,732.98 = 65,145.60 : x
2. Step 2: Convert to fraction form
   113,578.23/156,732.98 = 65,145.60/x
3. Step 3: Cross multiply
   113,578.23x = 156,732.98 × 65,145.60
4. Step 4: Simplify right side
   113,578.23x = 10,210,463,696.16
5. Step 5: Solve for x
   x = 10,210,463,696.16/113,578.23
6. Step 6: Final answer
   x = 89,898.07