Finding the Fourth Proportional to 67,678, 93,438 and 43,488.76

Step by Step Solution

1. Step 1: Write the proportion equation
   67,678 : 93,438 = 43,488.76 : x
2. Step 2: Convert to fraction form
   67,678/93,438 = 43,488.76/x
3. Step 3: Cross multiply
   67,678x = 93,438 × 43,488.76
4. Step 4: Simplify right side
   67,678x = 4,063,502,756.88
5. Step 5: Solve for x
   x = 4,063,502,756.88/67,678
6. Step 6: Final answer
   x = 60,041.71