Finding the Fourth Proportional to 42,665.10, 63,905.30 and 30,952.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,665.10 : 63,905.30 = 30,952.50 : x
2. Step 2: Convert to fraction form
   42,665.10/63,905.30 = 30,952.50/x
3. Step 3: Cross multiply
   42,665.10x = 63,905.30 × 30,952.50
4. Step 4: Simplify right side
   42,665.10x = 1,978,028,798.25
5. Step 5: Solve for x
   x = 1,978,028,798.25/42,665.10
6. Step 6: Final answer
   x = 46,361.75