Finding the Fourth Proportional to 81,083.60, 111,897.24 and 50,870.16

Step by Step Solution

1. Step 1: Write the proportion equation
   81,083.60 : 111,897.24 = 50,870.16 : x
2. Step 2: Convert to fraction form
   81,083.60/111,897.24 = 50,870.16/x
3. Step 3: Cross multiply
   81,083.60x = 111,897.24 × 50,870.16
4. Step 4: Simplify right side
   81,083.60x = 5,692,230,502.36
5. Step 5: Solve for x
   x = 5,692,230,502.36/81,083.60
6. Step 6: Final answer
   x = 70,202.00