Finding the Fourth Proportional to 70,676.32, 106,013.94 and 18,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,676.32 : 106,013.94 = 18,085.72 : x
2. Step 2: Convert to fraction form
   70,676.32/106,013.94 = 18,085.72/x
3. Step 3: Cross multiply
   70,676.32x = 106,013.94 × 18,085.72
4. Step 4: Simplify right side
   70,676.32x = 1,917,338,434.94
5. Step 5: Solve for x
   x = 1,917,338,434.94/70,676.32
6. Step 6: Final answer
   x = 27,128.44