Finding the Fourth Proportional to 81,064.39, 111,870.74 and 50,850.98

Step by Step Solution

1. Step 1: Write the proportion equation
   81,064.39 : 111,870.74 = 50,850.98 : x
2. Step 2: Convert to fraction form
   81,064.39/111,870.74 = 50,850.98/x
3. Step 3: Cross multiply
   81,064.39x = 111,870.74 × 50,850.98
4. Step 4: Simplify right side
   81,064.39x = 5,688,736,508.07
5. Step 5: Solve for x
   x = 5,688,736,508.07/81,064.39
6. Step 6: Final answer
   x = 70,175.53