Finding the Fourth Proportional to 78,007.41, 107,649.70 and 42,196.67

Step by Step Solution

1. Step 1: Write the proportion equation
   78,007.41 : 107,649.70 = 42,196.67 : x
2. Step 2: Convert to fraction form
   78,007.41/107,649.70 = 42,196.67/x
3. Step 3: Cross multiply
   78,007.41x = 107,649.70 × 42,196.67
4. Step 4: Simplify right side
   78,007.41x = 4,542,458,866.50
5. Step 5: Solve for x
   x = 4,542,458,866.50/78,007.41
6. Step 6: Final answer
   x = 58,231.12