Finding the Fourth Proportional to 64,845.99, 89,429.25 and 55,320.24

Step by Step Solution

1. Step 1: Write the proportion equation
   64,845.99 : 89,429.25 = 55,320.24 : x
2. Step 2: Convert to fraction form
   64,845.99/89,429.25 = 55,320.24/x
3. Step 3: Cross multiply
   64,845.99x = 89,429.25 × 55,320.24
4. Step 4: Simplify right side
   64,845.99x = 4,947,247,573.02
5. Step 5: Solve for x
   x = 4,947,247,573.02/64,845.99
6. Step 6: Final answer
   x = 76,292.27