Finding the Fourth Proportional to 72,978.95, 109,473.05 and 30,853.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,978.95 : 109,473.05 = 30,853.49 : x
2. Step 2: Convert to fraction form
   72,978.95/109,473.05 = 30,853.49/x
3. Step 3: Cross multiply
   72,978.95x = 109,473.05 × 30,853.49
4. Step 4: Simplify right side
   72,978.95x = 3,377,625,653.44
5. Step 5: Solve for x
   x = 3,377,625,653.44/72,978.95
6. Step 6: Final answer
   x = 46,282.19