Finding the Fourth Proportional to 42,820.25, 64,192.10 and 33,408.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,820.25 : 64,192.10 = 33,408.86 : x
2. Step 2: Convert to fraction form
   42,820.25/64,192.10 = 33,408.86/x
3. Step 3: Cross multiply
   42,820.25x = 64,192.10 × 33,408.86
4. Step 4: Simplify right side
   42,820.25x = 2,144,584,394.00
5. Step 5: Solve for x
   x = 2,144,584,394.00/42,820.25
6. Step 6: Final answer
   x = 50,083.42