Finding the Fourth Proportional to 42,968.22, 64,499.46 and 34,140.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,968.22 : 64,499.46 = 34,140.30 : x
2. Step 2: Convert to fraction form
   42,968.22/64,499.46 = 34,140.30/x
3. Step 3: Cross multiply
   42,968.22x = 64,499.46 × 34,140.30
4. Step 4: Simplify right side
   42,968.22x = 2,202,030,914.24
5. Step 5: Solve for x
   x = 2,202,030,914.24/42,968.22
6. Step 6: Final answer
   x = 51,247.90