Finding the Fourth Proportional to 42,763.68, 64,093.50 and 30,287.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,763.68 : 64,093.50 = 30,287.34 : x
2. Step 2: Convert to fraction form
   42,763.68/64,093.50 = 30,287.34/x
3. Step 3: Cross multiply
   42,763.68x = 64,093.50 × 30,287.34
4. Step 4: Simplify right side
   42,763.68x = 1,941,221,626.29
5. Step 5: Solve for x
   x = 1,941,221,626.29/42,763.68
6. Step 6: Final answer
   x = 45,394.17