Finding the Fourth Proportional to 42,899.55, 64,327.38 and 17,932.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,899.55 : 64,327.38 = 17,932.78 : x
2. Step 2: Convert to fraction form
   42,899.55/64,327.38 = 17,932.78/x
3. Step 3: Cross multiply
   42,899.55x = 64,327.38 × 17,932.78
4. Step 4: Simplify right side
   42,899.55x = 1,153,568,753.52
5. Step 5: Solve for x
   x = 1,153,568,753.52/42,899.55
6. Step 6: Final answer
   x = 26,890.00