Finding the Fourth Proportional to 113,108.71, 156,109.22 and 65,389.81

Step by Step Solution

1. Step 1: Write the proportion equation
   113,108.71 : 156,109.22 = 65,389.81 : x
2. Step 2: Convert to fraction form
   113,108.71/156,109.22 = 65,389.81/x
3. Step 3: Cross multiply
   113,108.71x = 156,109.22 × 65,389.81
4. Step 4: Simplify right side
   113,108.71x = 10,207,952,235.05
5. Step 5: Solve for x
   x = 10,207,952,235.05/113,108.71
6. Step 6: Final answer
   x = 90,249.04