Finding the Fourth Proportional to 42,756.12, 64,147.14 and 30,300.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,756.12 : 64,147.14 = 30,300.24 : x
2. Step 2: Convert to fraction form
   42,756.12/64,147.14 = 30,300.24/x
3. Step 3: Cross multiply
   42,756.12x = 64,147.14 × 30,300.24
4. Step 4: Simplify right side
   42,756.12x = 1,943,673,737.31
5. Step 5: Solve for x
   x = 1,943,673,737.31/42,756.12
6. Step 6: Final answer
   x = 45,459.54