Finding the Fourth Proportional to 116,515.35, 173,377.51 and 116,121.69

Step by Step Solution

1. Step 1: Write the proportion equation
   116,515.35 : 173,377.51 = 116,121.69 : x
2. Step 2: Convert to fraction form
   116,515.35/173,377.51 = 116,121.69/x
3. Step 3: Cross multiply
   116,515.35x = 173,377.51 × 116,121.69
4. Step 4: Simplify right side
   116,515.35x = 20,132,889,178.89
5. Step 5: Solve for x
   x = 20,132,889,178.89/116,515.35
6. Step 6: Final answer
   x = 172,791.73