Finding the Fourth Proportional to 113,142.57, 156,164.81 and 65,389.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,142.57 : 156,164.81 = 65,389.02 : x
2. Step 2: Convert to fraction form
   113,142.57/156,164.81 = 65,389.02/x
3. Step 3: Cross multiply
   113,142.57x = 156,164.81 × 65,389.02
4. Step 4: Simplify right side
   113,142.57x = 10,211,463,557.44
5. Step 5: Solve for x
   x = 10,211,463,557.44/113,142.57
6. Step 6: Final answer
   x = 90,253.06