Finding the Fourth Proportional to 81,018.66, 111,787.71 and 47,007.39

Step by Step Solution

1. Step 1: Write the proportion equation
   81,018.66 : 111,787.71 = 47,007.39 : x
2. Step 2: Convert to fraction form
   81,018.66/111,787.71 = 47,007.39/x
3. Step 3: Cross multiply
   81,018.66x = 111,787.71 × 47,007.39
4. Step 4: Simplify right side
   81,018.66x = 5,254,848,481.18
5. Step 5: Solve for x
   x = 5,254,848,481.18/81,018.66
6. Step 6: Final answer
   x = 64,859.73