Finding the Fourth Proportional to 72,978.47, 100,710.23 and 39,444.47

Step by Step Solution

1. Step 1: Write the proportion equation
   72,978.47 : 100,710.23 = 39,444.47 : x
2. Step 2: Convert to fraction form
   72,978.47/100,710.23 = 39,444.47/x
3. Step 3: Cross multiply
   72,978.47x = 100,710.23 × 39,444.47
4. Step 4: Simplify right side
   72,978.47x = 3,972,461,645.93
5. Step 5: Solve for x
   x = 3,972,461,645.93/72,978.47
6. Step 6: Final answer
   x = 54,433.34