Finding the Fourth Proportional to 42,741.28, 64,056.18 and 30,934.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,741.28 : 64,056.18 = 30,934.84 : x
2. Step 2: Convert to fraction form
   42,741.28/64,056.18 = 30,934.84/x
3. Step 3: Cross multiply
   42,741.28x = 64,056.18 × 30,934.84
4. Step 4: Simplify right side
   42,741.28x = 1,981,567,679.31
5. Step 5: Solve for x
   x = 1,981,567,679.31/42,741.28
6. Step 6: Final answer
   x = 46,361.92