Finding the Fourth Proportional to 67,676.50, 93,404.51 and 64,686.39

Step by Step Solution

1. Step 1: Write the proportion equation
   67,676.50 : 93,404.51 = 64,686.39 : x
2. Step 2: Convert to fraction form
   67,676.50/93,404.51 = 64,686.39/x
3. Step 3: Cross multiply
   67,676.50x = 93,404.51 × 64,686.39
4. Step 4: Simplify right side
   67,676.50x = 6,042,000,561.62
5. Step 5: Solve for x
   x = 6,042,000,561.62/67,676.50
6. Step 6: Final answer
   x = 89,277.67