Finding the Fourth Proportional to 73,288.86, 109,924.05 and 31,185.78

Step by Step Solution

1. Step 1: Write the proportion equation
   73,288.86 : 109,924.05 = 31,185.78 : x
2. Step 2: Convert to fraction form
   73,288.86/109,924.05 = 31,185.78/x
3. Step 3: Cross multiply
   73,288.86x = 109,924.05 × 31,185.78
4. Step 4: Simplify right side
   73,288.86x = 3,428,067,240.01
5. Step 5: Solve for x
   x = 3,428,067,240.01/73,288.86
6. Step 6: Final answer
   x = 46,774.74