Finding the Fourth Proportional to 42,760.96, 64,151.87 and 30,135.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,760.96 : 64,151.87 = 30,135.34 : x
2. Step 2: Convert to fraction form
   42,760.96/64,151.87 = 30,135.34/x
3. Step 3: Cross multiply
   42,760.96x = 64,151.87 × 30,135.34
4. Step 4: Simplify right side
   42,760.96x = 1,933,238,414.09
5. Step 5: Solve for x
   x = 1,933,238,414.09/42,760.96
6. Step 6: Final answer
   x = 45,210.36