Finding the Fourth Proportional to 73,128.76, 100,917.72 and 39,594.76

Step by Step Solution

1. Step 1: Write the proportion equation
   73,128.76 : 100,917.72 = 39,594.76 : x
2. Step 2: Convert to fraction form
   73,128.76/100,917.72 = 39,594.76/x
3. Step 3: Cross multiply
   73,128.76x = 100,917.72 × 39,594.76
4. Step 4: Simplify right side
   73,128.76x = 3,995,812,903.15
5. Step 5: Solve for x
   x = 3,995,812,903.15/73,128.76
6. Step 6: Final answer
   x = 54,640.79