Finding the Fourth Proportional to 53,742, 80,218.56 and 49,783.56

Step by Step Solution

1. Step 1: Write the proportion equation
   53,742 : 80,218.56 = 49,783.56 : x
2. Step 2: Convert to fraction form
   53,742/80,218.56 = 49,783.56/x
3. Step 3: Cross multiply
   53,742x = 80,218.56 × 49,783.56
4. Step 4: Simplify right side
   53,742x = 3,993,565,494.87
5. Step 5: Solve for x
   x = 3,993,565,494.87/53,742
6. Step 6: Final answer
   x = 74,309.95