Finding the Fourth Proportional to 72,925.79, 109,405.89 and 28,540.62

Step by Step Solution

1. Step 1: Write the proportion equation
   72,925.79 : 109,405.89 = 28,540.62 : x
2. Step 2: Convert to fraction form
   72,925.79/109,405.89 = 28,540.62/x
3. Step 3: Cross multiply
   72,925.79x = 109,405.89 × 28,540.62
4. Step 4: Simplify right side
   72,925.79x = 3,122,511,932.25
5. Step 5: Solve for x
   x = 3,122,511,932.25/72,925.79
6. Step 6: Final answer
   x = 42,817.67