Finding the Fourth Proportional to 42,757.72, 64,140.84 and 34,934.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,757.72 : 64,140.84 = 34,934.34 : x
2. Step 2: Convert to fraction form
   42,757.72/64,140.84 = 34,934.34/x
3. Step 3: Cross multiply
   42,757.72x = 64,140.84 × 34,934.34
4. Step 4: Simplify right side
   42,757.72x = 2,240,717,912.45
5. Step 5: Solve for x
   x = 2,240,717,912.45/42,757.72
6. Step 6: Final answer
   x = 52,404.99