Finding the Fourth Proportional to 42,962.30, 64,411.05 and 28,174.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,962.30 : 64,411.05 = 28,174.94 : x
2. Step 2: Convert to fraction form
   42,962.30/64,411.05 = 28,174.94/x
3. Step 3: Cross multiply
   42,962.30x = 64,411.05 × 28,174.94
4. Step 4: Simplify right side
   42,962.30x = 1,814,777,469.09
5. Step 5: Solve for x
   x = 1,814,777,469.09/42,962.30
6. Step 6: Final answer
   x = 42,241.16