Finding the Fourth Proportional to 42,711.38, 64,030.62 and 30,192.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,711.38 : 64,030.62 = 30,192.02 : x
2. Step 2: Convert to fraction form
   42,711.38/64,030.62 = 30,192.02/x
3. Step 3: Cross multiply
   42,711.38x = 64,030.62 × 30,192.02
4. Step 4: Simplify right side
   42,711.38x = 1,933,213,983.18
5. Step 5: Solve for x
   x = 1,933,213,983.18/42,711.38
6. Step 6: Final answer
   x = 45,262.26