Finding the Fourth Proportional to 212,665.56, 293,520.84 and 122,082.72

Step by Step Solution

1. Step 1: Write the proportion equation
   212,665.56 : 293,520.84 = 122,082.72 : x
2. Step 2: Convert to fraction form
   212,665.56/293,520.84 = 122,082.72/x
3. Step 3: Cross multiply
   212,665.56x = 293,520.84 × 122,082.72
4. Step 4: Simplify right side
   212,665.56x = 35,833,822,523.88
5. Step 5: Solve for x
   x = 35,833,822,523.88/212,665.56
6. Step 6: Final answer
   x = 168,498.47