Finding the Fourth Proportional to 81,058.21, 111,859.89 and 47,075.05

Step by Step Solution

1. Step 1: Write the proportion equation
   81,058.21 : 111,859.89 = 47,075.05 : x
2. Step 2: Convert to fraction form
   81,058.21/111,859.89 = 47,075.05/x
3. Step 3: Cross multiply
   81,058.21x = 111,859.89 × 47,075.05
4. Step 4: Simplify right side
   81,058.21x = 5,265,809,914.74
5. Step 5: Solve for x
   x = 5,265,809,914.74/81,058.21
6. Step 6: Final answer
   x = 64,963.31