Finding the Fourth Proportional to 73,128.78, 109,757.16 and 35,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73,128.78 : 109,757.16 = 35,716.50 : x
2. Step 2: Convert to fraction form
   73,128.78/109,757.16 = 35,716.50/x
3. Step 3: Cross multiply
   73,128.78x = 109,757.16 × 35,716.50
4. Step 4: Simplify right side
   73,128.78x = 3,920,141,605.14
5. Step 5: Solve for x
   x = 3,920,141,605.14/73,128.78
6. Step 6: Final answer
   x = 53,606.00