Finding the Fourth Proportional to 73,109.78, 109,664.69 and 26,362.65

Step by Step Solution

1. Step 1: Write the proportion equation
   73,109.78 : 109,664.69 = 26,362.65 : x
2. Step 2: Convert to fraction form
   73,109.78/109,664.69 = 26,362.65/x
3. Step 3: Cross multiply
   73,109.78x = 109,664.69 × 26,362.65
4. Step 4: Simplify right side
   73,109.78x = 2,891,051,965.04
5. Step 5: Solve for x
   x = 2,891,051,965.04/73,109.78
6. Step 6: Final answer
   x = 39,543.99