Finding the Fourth Proportional to 72,426.36, 108,603.93 and 30,293.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,426.36 : 108,603.93 = 30,293.79 : x
2. Step 2: Convert to fraction form
   72,426.36/108,603.93 = 30,293.79/x
3. Step 3: Cross multiply
   72,426.36x = 108,603.93 × 30,293.79
4. Step 4: Simplify right side
   72,426.36x = 3,290,024,648.59
5. Step 5: Solve for x
   x = 3,290,024,648.59/72,426.36
6. Step 6: Final answer
   x = 45,425.79