Finding the Fourth Proportional to 109,853.10, 164,650.05 and 82,118.70

Step by Step Solution

1. Step 1: Write the proportion equation
   109,853.10 : 164,650.05 = 82,118.70 : x
2. Step 2: Convert to fraction form
   109,853.10/164,650.05 = 82,118.70/x
3. Step 3: Cross multiply
   109,853.10x = 164,650.05 × 82,118.70
4. Step 4: Simplify right side
   109,853.10x = 13,520,848,060.94
5. Step 5: Solve for x
   x = 13,520,848,060.94/109,853.10
6. Step 6: Final answer
   x = 123,081.17