Finding the Fourth Proportional to 72,577.43, 108,872.99 and 28,207.58

Step by Step Solution

1. Step 1: Write the proportion equation
   72,577.43 : 108,872.99 = 28,207.58 : x
2. Step 2: Convert to fraction form
   72,577.43/108,872.99 = 28,207.58/x
3. Step 3: Cross multiply
   72,577.43x = 108,872.99 × 28,207.58
4. Step 4: Simplify right side
   72,577.43x = 3,071,042,889.86
5. Step 5: Solve for x
   x = 3,071,042,889.86/72,577.43
6. Step 6: Final answer
   x = 42,314.02