Finding the Fourth Proportional to 72,993.47, 100,730.71 and 39,459.47

Step by Step Solution

1. Step 1: Write the proportion equation
   72,993.47 : 100,730.71 = 39,459.47 : x
2. Step 2: Convert to fraction form
   72,993.47/100,730.71 = 39,459.47/x
3. Step 3: Cross multiply
   72,993.47x = 100,730.71 × 39,459.47
4. Step 4: Simplify right side
   72,993.47x = 3,974,780,429.32
5. Step 5: Solve for x
   x = 3,974,780,429.32/72,993.47
6. Step 6: Final answer
   x = 54,453.92