Finding the Fourth Proportional to 64,786,081.88, 89,405,855.58 and 38,682,880.76

Step by Step Solution

1. Step 1: Write the proportion equation
   64,786,081.88 : 89,405,855.58 = 38,682,880.76 : x
2. Step 2: Convert to fraction form
   64,786,081.88/89,405,855.58 = 38,682,880.76/x
3. Step 3: Cross multiply
   64,786,081.88x = 89,405,855.58 × 38,682,880.76
4. Step 4: Simplify right side
   64,786,081.88x = 3,458,476,050,646,920.50
5. Step 5: Solve for x
   x = 3,458,476,050,646,920.50/64,786,081.88
6. Step 6: Final answer
   x = 53,383,009.90