Finding the Fourth Proportional to 42,899.40, 64,277.96 and 30,357.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,899.40 : 64,277.96 = 30,357.24 : x
2. Step 2: Convert to fraction form
   42,899.40/64,277.96 = 30,357.24/x
3. Step 3: Cross multiply
   42,899.40x = 64,277.96 × 30,357.24
4. Step 4: Simplify right side
   42,899.40x = 1,951,301,458.43
5. Step 5: Solve for x
   x = 1,951,301,458.43/42,899.40
6. Step 6: Final answer
   x = 45,485.52