Finding the Fourth Proportional to 212,418.91, 293,137.81 and 116,931.72

Step by Step Solution

1. Step 1: Write the proportion equation
   212,418.91 : 293,137.81 = 116,931.72 : x
2. Step 2: Convert to fraction form
   212,418.91/293,137.81 = 116,931.72/x
3. Step 3: Cross multiply
   212,418.91x = 293,137.81 × 116,931.72
4. Step 4: Simplify right side
   212,418.91x = 34,277,108,320.33
5. Step 5: Solve for x
   x = 34,277,108,320.33/212,418.91
6. Step 6: Final answer
   x = 161,365.62