Finding the Fourth Proportional to 81,109, 111,899.10 and 50,881.96

Step by Step Solution

1. Step 1: Write the proportion equation
   81,109 : 111,899.10 = 50,881.96 : x
2. Step 2: Convert to fraction form
   81,109/111,899.10 = 50,881.96/x
3. Step 3: Cross multiply
   81,109x = 111,899.10 × 50,881.96
4. Step 4: Simplify right side
   81,109x = 5,693,645,530.24
5. Step 5: Solve for x
   x = 5,693,645,530.24/81,109
6. Step 6: Final answer
   x = 70,197.46