Finding the Fourth Proportional to 73,116.76, 109,720.26 and 28,735.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,116.76 : 109,720.26 = 28,735.72 : x
2. Step 2: Convert to fraction form
   73,116.76/109,720.26 = 28,735.72/x
3. Step 3: Cross multiply
   73,116.76x = 109,720.26 × 28,735.72
4. Step 4: Simplify right side
   73,116.76x = 3,152,890,669.69
5. Step 5: Solve for x
   x = 3,152,890,669.69/73,116.76
6. Step 6: Final answer
   x = 43,121.31