Finding the Fourth Proportional to 73,738.35, 110,610.77 and 21,153.15

Step by Step Solution

1. Step 1: Write the proportion equation
   73,738.35 : 110,610.77 = 21,153.15 : x
2. Step 2: Convert to fraction form
   73,738.35/110,610.77 = 21,153.15/x
3. Step 3: Cross multiply
   73,738.35x = 110,610.77 × 21,153.15
4. Step 4: Simplify right side
   73,738.35x = 2,339,766,103.66
5. Step 5: Solve for x
   x = 2,339,766,103.66/73,738.35
6. Step 6: Final answer
   x = 31,730.65