Finding the Fourth Proportional to 78,648.39, 108,558.50 and 53,512.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,648.39 : 108,558.50 = 53,512.47 : x
2. Step 2: Convert to fraction form
   78,648.39/108,558.50 = 53,512.47/x
3. Step 3: Cross multiply
   78,648.39x = 108,558.50 × 53,512.47
4. Step 4: Simplify right side
   78,648.39x = 5,809,233,206.93
5. Step 5: Solve for x
   x = 5,809,233,206.93/78,648.39
6. Step 6: Final answer
   x = 73,863.35