Finding the Fourth Proportional to 73,131.84, 109,623.90 and 28,789.71

Step by Step Solution

1. Step 1: Write the proportion equation
   73,131.84 : 109,623.90 = 28,789.71 : x
2. Step 2: Convert to fraction form
   73,131.84/109,623.90 = 28,789.71/x
3. Step 3: Cross multiply
   73,131.84x = 109,623.90 × 28,789.71
4. Step 4: Simplify right side
   73,131.84x = 3,156,040,290.07
5. Step 5: Solve for x
   x = 3,156,040,290.07/73,131.84
6. Step 6: Final answer
   x = 43,155.49