Finding the Fourth Proportional to 42,889.05, 64,311.63 and 17,922.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,889.05 : 64,311.63 = 17,922.28 : x
2. Step 2: Convert to fraction form
   42,889.05/64,311.63 = 17,922.28/x
3. Step 3: Cross multiply
   42,889.05x = 64,311.63 × 17,922.28
4. Step 4: Simplify right side
   42,889.05x = 1,152,611,040.12
5. Step 5: Solve for x
   x = 1,152,611,040.12/42,889.05
6. Step 6: Final answer
   x = 26,874.25