Finding the Fourth Proportional to 72,636.52, 108,961.86 and 28,266.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,636.52 : 108,961.86 = 28,266.88 : x
2. Step 2: Convert to fraction form
   72,636.52/108,961.86 = 28,266.88/x
3. Step 3: Cross multiply
   72,636.52x = 108,961.86 × 28,266.88
4. Step 4: Simplify right side
   72,636.52x = 3,080,011,821.20
5. Step 5: Solve for x
   x = 3,080,011,821.20/72,636.52
6. Step 6: Final answer
   x = 42,403.08