Finding the Fourth Proportional to 42,891.49, 64,249.71 and 22,071.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,891.49 : 64,249.71 = 22,071.25 : x
2. Step 2: Convert to fraction form
   42,891.49/64,249.71 = 22,071.25/x
3. Step 3: Cross multiply
   42,891.49x = 64,249.71 × 22,071.25
4. Step 4: Simplify right side
   42,891.49x = 1,418,071,411.84
5. Step 5: Solve for x
   x = 1,418,071,411.84/42,891.49
6. Step 6: Final answer
   x = 33,061.84