Finding the Fourth Proportional to 72,978.84, 100,710.95 and 39,444.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,978.84 : 100,710.95 = 39,444.84 : x
2. Step 2: Convert to fraction form
   72,978.84/100,710.95 = 39,444.84/x
3. Step 3: Cross multiply
   72,978.84x = 100,710.95 × 39,444.84
4. Step 4: Simplify right side
   72,978.84x = 3,972,527,111.77
5. Step 5: Solve for x
   x = 3,972,527,111.77/72,978.84
6. Step 6: Final answer
   x = 54,433.96