Finding the Fourth Proportional to 42,958.97, 64,485.60 and 34,131.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,958.97 : 64,485.60 = 34,131.04 : x
2. Step 2: Convert to fraction form
   42,958.97/64,485.60 = 34,131.04/x
3. Step 3: Cross multiply
   42,958.97x = 64,485.60 × 34,131.04
4. Step 4: Simplify right side
   42,958.97x = 2,200,960,666.55
5. Step 5: Solve for x
   x = 2,200,960,666.55/42,958.97
6. Step 6: Final answer
   x = 51,234.02