Finding the Fourth Proportional to 42,730.17, 64,032.89 and 30,243.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,730.17 : 64,032.89 = 30,243.42 : x
2. Step 2: Convert to fraction form
   42,730.17/64,032.89 = 30,243.42/x
3. Step 3: Cross multiply
   42,730.17x = 64,032.89 × 30,243.42
4. Step 4: Simplify right side
   42,730.17x = 1,936,573,434.87
5. Step 5: Solve for x
   x = 1,936,573,434.87/42,730.17
6. Step 6: Final answer
   x = 45,320.99