Finding the Fourth Proportional to 70,932.72, 106,414.63 and 21,016.74

Step by Step Solution

1. Step 1: Write the proportion equation
   70,932.72 : 106,414.63 = 21,016.74 : x
2. Step 2: Convert to fraction form
   70,932.72/106,414.63 = 21,016.74/x
3. Step 3: Cross multiply
   70,932.72x = 106,414.63 × 21,016.74
4. Step 4: Simplify right side
   70,932.72x = 2,236,488,610.91
5. Step 5: Solve for x
   x = 2,236,488,610.91/70,932.72
6. Step 6: Final answer
   x = 31,529.72