Finding the Fourth Proportional to 43,145.83, 64,692.31 and 16,819.82

Step by Step Solution

1. Step 1: Write the proportion equation
   43,145.83 : 64,692.31 = 16,819.82 : x
2. Step 2: Convert to fraction form
   43,145.83/64,692.31 = 16,819.82/x
3. Step 3: Cross multiply
   43,145.83x = 64,692.31 × 16,819.82
4. Step 4: Simplify right side
   43,145.83x = 1,088,112,686.12
5. Step 5: Solve for x
   x = 1,088,112,686.12/43,145.83
6. Step 6: Final answer
   x = 25,219.42