Finding the Fourth Proportional to 56,499.28, 84,688.44 and 35,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,499.28 : 84,688.44 = 35,728.72 : x
2. Step 2: Convert to fraction form
   56,499.28/84,688.44 = 35,728.72/x
3. Step 3: Cross multiply
   56,499.28x = 84,688.44 × 35,728.72
4. Step 4: Simplify right side
   56,499.28x = 3,025,809,560.00
5. Step 5: Solve for x
   x = 3,025,809,560.00/56,499.28
6. Step 6: Final answer
   x = 53,554.83