Finding the Fourth Proportional to 72,643.34, 108,910.92 and 30,535.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,643.34 : 108,910.92 = 30,535.76 : x
2. Step 2: Convert to fraction form
   72,643.34/108,910.92 = 30,535.76/x
3. Step 3: Cross multiply
   72,643.34x = 108,910.92 × 30,535.76
4. Step 4: Simplify right side
   72,643.34x = 3,325,677,714.50
5. Step 5: Solve for x
   x = 3,325,677,714.50/72,643.34
6. Step 6: Final answer
   x = 45,780.90