Finding the Fourth Proportional to 81,936.78, 122,930.69 and 29,346.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,936.78 : 122,930.69 = 29,346.72 : x
2. Step 2: Convert to fraction form
   81,936.78/122,930.69 = 29,346.72/x
3. Step 3: Cross multiply
   81,936.78x = 122,930.69 × 29,346.72
4. Step 4: Simplify right side
   81,936.78x = 3,607,612,392.10
5. Step 5: Solve for x
   x = 3,607,612,392.10/81,936.78
6. Step 6: Final answer
   x = 44,029.22