Finding the Fourth Proportional to 99,804.55, 137,730.63 and 54,483.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,804.55 : 137,730.63 = 54,483.54 : x
2. Step 2: Convert to fraction form
   99,804.55/137,730.63 = 54,483.54/x
3. Step 3: Cross multiply
   99,804.55x = 137,730.63 × 54,483.54
4. Step 4: Simplify right side
   99,804.55x = 7,504,052,288.83
5. Step 5: Solve for x
   x = 7,504,052,288.83/99,804.55
6. Step 6: Final answer
   x = 75,187.48