Finding the Fourth Proportional to 81,192.83, 111,973.52 and 50,980.97

Step by Step Solution

1. Step 1: Write the proportion equation
   81,192.83 : 111,973.52 = 50,980.97 : x
2. Step 2: Convert to fraction form
   81,192.83/111,973.52 = 50,980.97/x
3. Step 3: Cross multiply
   81,192.83x = 111,973.52 × 50,980.97
4. Step 4: Simplify right side
   81,192.83x = 5,708,519,071.30
5. Step 5: Solve for x
   x = 5,708,519,071.30/81,192.83
6. Step 6: Final answer
   x = 70,308.17