Finding the Fourth Proportional to 100,984.49, 139,352.31 and 55,662.83

Step by Step Solution

1. Step 1: Write the proportion equation
   100,984.49 : 139,352.31 = 55,662.83 : x
2. Step 2: Convert to fraction form
   100,984.49/139,352.31 = 55,662.83/x
3. Step 3: Cross multiply
   100,984.49x = 139,352.31 × 55,662.83
4. Step 4: Simplify right side
   100,984.49x = 7,756,744,290.02
5. Step 5: Solve for x
   x = 7,756,744,290.02/100,984.49
6. Step 6: Final answer
   x = 76,811.24