Finding the Fourth Proportional to 113,164.38, 156,186.09 and 65,446.74

Step by Step Solution

1. Step 1: Write the proportion equation
   113,164.38 : 156,186.09 = 65,446.74 : x
2. Step 2: Convert to fraction form
   113,164.38/156,186.09 = 65,446.74/x
3. Step 3: Cross multiply
   113,164.38x = 156,186.09 × 65,446.74
4. Step 4: Simplify right side
   113,164.38x = 10,221,870,423.85
5. Step 5: Solve for x
   x = 10,221,870,423.85/113,164.38
6. Step 6: Final answer
   x = 90,327.63