Finding the Fourth Proportional to 77,111.69, 115,676.78 and 27,181.46

Step by Step Solution

1. Step 1: Write the proportion equation
   77,111.69 : 115,676.78 = 27,181.46 : x
2. Step 2: Convert to fraction form
   77,111.69/115,676.78 = 27,181.46/x
3. Step 3: Cross multiply
   77,111.69x = 115,676.78 × 27,181.46
4. Step 4: Simplify right side
   77,111.69x = 3,144,263,921.78
5. Step 5: Solve for x
   x = 3,144,263,921.78/77,111.69
6. Step 6: Final answer
   x = 40,775.45