Finding the Fourth Proportional to 42,907.82, 64,385.90 and 33,521.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,907.82 : 64,385.90 = 33,521.53 : x
2. Step 2: Convert to fraction form
   42,907.82/64,385.90 = 33,521.53/x
3. Step 3: Cross multiply
   42,907.82x = 64,385.90 × 33,521.53
4. Step 4: Simplify right side
   42,907.82x = 2,158,313,878.43
5. Step 5: Solve for x
   x = 2,158,313,878.43/42,907.82
6. Step 6: Final answer
   x = 50,301.18