Finding the Fourth Proportional to 113,667.46, 156,869.65 and 65,920.38

Step by Step Solution

1. Step 1: Write the proportion equation
   113,667.46 : 156,869.65 = 65,920.38 : x
2. Step 2: Convert to fraction form
   113,667.46/156,869.65 = 65,920.38/x
3. Step 3: Cross multiply
   113,667.46x = 156,869.65 × 65,920.38
4. Step 4: Simplify right side
   113,667.46x = 10,340,906,938.47
5. Step 5: Solve for x
   x = 10,340,906,938.47/113,667.46
6. Step 6: Final answer
   x = 90,975.09