Finding the Fourth Proportional to 42,669.05, 64,086.62 and 34,777.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,669.05 : 64,086.62 = 34,777.40 : x
2. Step 2: Convert to fraction form
   42,669.05/64,086.62 = 34,777.40/x
3. Step 3: Cross multiply
   42,669.05x = 64,086.62 × 34,777.40
4. Step 4: Simplify right side
   42,669.05x = 2,228,765,524.07
5. Step 5: Solve for x
   x = 2,228,765,524.07/42,669.05
6. Step 6: Final answer
   x = 52,233.78