Finding the Fourth Proportional to 64,920.53, 89,591.84 and 40,722.51

Step by Step Solution

1. Step 1: Write the proportion equation
   64,920.53 : 89,591.84 = 40,722.51 : x
2. Step 2: Convert to fraction form
   64,920.53/89,591.84 = 40,722.51/x
3. Step 3: Cross multiply
   64,920.53x = 89,591.84 × 40,722.51
4. Step 4: Simplify right side
   64,920.53x = 3,648,404,600.32
5. Step 5: Solve for x
   x = 3,648,404,600.32/64,920.53
6. Step 6: Final answer
   x = 56,198.01