Finding the Fourth Proportional to 51,111.74, 76,645.71 and 17,821.96

Step by Step Solution

1. Step 1: Write the proportion equation
   51,111.74 : 76,645.71 = 17,821.96 : x
2. Step 2: Convert to fraction form
   51,111.74/76,645.71 = 17,821.96/x
3. Step 3: Cross multiply
   51,111.74x = 76,645.71 × 17,821.96
4. Step 4: Simplify right side
   51,111.74x = 1,365,976,586.18
5. Step 5: Solve for x
   x = 1,365,976,586.18/51,111.74
6. Step 6: Final answer
   x = 26,725.30