Finding the Fourth Proportional to 72,436.50, 108,576.72 and 30,305.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72,436.50 : 108,576.72 = 30,305.70 : x
2. Step 2: Convert to fraction form
   72,436.50/108,576.72 = 30,305.70/x
3. Step 3: Cross multiply
   72,436.50x = 108,576.72 × 30,305.70
4. Step 4: Simplify right side
   72,436.50x = 3,290,493,503.30
5. Step 5: Solve for x
   x = 3,290,493,503.30/72,436.50
6. Step 6: Final answer
   x = 45,425.90