Finding the Fourth Proportional to 72,429.35, 108,608.45 and 30,296.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,429.35 : 108,608.45 = 30,296.79 : x
2. Step 2: Convert to fraction form
   72,429.35/108,608.45 = 30,296.79/x
3. Step 3: Cross multiply
   72,429.35x = 108,608.45 × 30,296.79
4. Step 4: Simplify right side
   72,429.35x = 3,290,487,250.39
5. Step 5: Solve for x
   x = 3,290,487,250.39/72,429.35
6. Step 6: Final answer
   x = 45,430.31