Finding the Fourth Proportional to 42,933.75, 64,411.58 and 13,351.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,933.75 : 64,411.58 = 13,351.83 : x
2. Step 2: Convert to fraction form
   42,933.75/64,411.58 = 13,351.83/x
3. Step 3: Cross multiply
   42,933.75x = 64,411.58 × 13,351.83
4. Step 4: Simplify right side
   42,933.75x = 860,012,466.19
5. Step 5: Solve for x
   x = 860,012,466.19/42,933.75
6. Step 6: Final answer
   x = 20,031.15