Finding the Fourth Proportional to 72,805.48, 109,234.35 and 28,464.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,805.48 : 109,234.35 = 28,464.06 : x
2. Step 2: Convert to fraction form
   72,805.48/109,234.35 = 28,464.06/x
3. Step 3: Cross multiply
   72,805.48x = 109,234.35 × 28,464.06
4. Step 4: Simplify right side
   72,805.48x = 3,109,252,807.59
5. Step 5: Solve for x
   x = 3,109,252,807.59/72,805.48
6. Step 6: Final answer
   x = 42,706.30