Finding the Fourth Proportional to 42,710.42, 64,073.37 and 21,374.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,710.42 : 64,073.37 = 21,374.27 : x
2. Step 2: Convert to fraction form
   42,710.42/64,073.37 = 21,374.27/x
3. Step 3: Cross multiply
   42,710.42x = 64,073.37 × 21,374.27
4. Step 4: Simplify right side
   42,710.42x = 1,369,521,189.82
5. Step 5: Solve for x
   x = 1,369,521,189.82/42,710.42
6. Step 6: Final answer
   x = 32,065.27