Finding the Fourth Proportional to 43,369.58, 64,687.92 and 42,057.02

Step by Step Solution

1. Step 1: Write the proportion equation
   43,369.58 : 64,687.92 = 42,057.02 : x
2. Step 2: Convert to fraction form
   43,369.58/64,687.92 = 42,057.02/x
3. Step 3: Cross multiply
   43,369.58x = 64,687.92 × 42,057.02
4. Step 4: Simplify right side
   43,369.58x = 2,720,581,145.20
5. Step 5: Solve for x
   x = 2,720,581,145.20/43,369.58
6. Step 6: Final answer
   x = 62,730.17