Finding the Fourth Proportional to 42,739.31, 64,053.12 and 30,932.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,739.31 : 64,053.12 = 30,932.84 : x
2. Step 2: Convert to fraction form
   42,739.31/64,053.12 = 30,932.84/x
3. Step 3: Cross multiply
   42,739.31x = 64,053.12 × 30,932.84
4. Step 4: Simplify right side
   42,739.31x = 1,981,344,912.46
5. Step 5: Solve for x
   x = 1,981,344,912.46/42,739.31
6. Step 6: Final answer
   x = 46,358.84