Finding the Fourth Proportional to 42,968.72, 64,500.18 and 34,140.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,968.72 : 64,500.18 = 34,140.80 : x
2. Step 2: Convert to fraction form
   42,968.72/64,500.18 = 34,140.80/x
3. Step 3: Cross multiply
   42,968.72x = 64,500.18 × 34,140.80
4. Step 4: Simplify right side
   42,968.72x = 2,202,087,745.34
5. Step 5: Solve for x
   x = 2,202,087,745.34/42,968.72
6. Step 6: Final answer
   x = 51,248.62