Finding the Fourth Proportional to 72,415.50, 108,623.34 and 30,272.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,415.50 : 108,623.34 = 30,272.52 : x
2. Step 2: Convert to fraction form
   72,415.50/108,623.34 = 30,272.52/x
3. Step 3: Cross multiply
   72,415.50x = 108,623.34 × 30,272.52
4. Step 4: Simplify right side
   72,415.50x = 3,288,302,338.21
5. Step 5: Solve for x
   x = 3,288,302,338.21/72,415.50
6. Step 6: Final answer
   x = 45,408.82