Finding the Fourth Proportional to 81,108, 111,897.72 and 50,880.96

Step by Step Solution

1. Step 1: Write the proportion equation
   81,108 : 111,897.72 = 50,880.96 : x
2. Step 2: Convert to fraction form
   81,108/111,897.72 = 50,880.96/x
3. Step 3: Cross multiply
   81,108x = 111,897.72 × 50,880.96
4. Step 4: Simplify right side
   81,108x = 5,693,463,415.41
5. Step 5: Solve for x
   x = 5,693,463,415.41/81,108
6. Step 6: Final answer
   x = 70,196.08