Finding the Fourth Proportional to 42,966.30, 64,452.52 and 17,981.19

Step by Step Solution

1. Step 1: Write the proportion equation
   42,966.30 : 64,452.52 = 17,981.19 : x
2. Step 2: Convert to fraction form
   42,966.30/64,452.52 = 17,981.19/x
3. Step 3: Cross multiply
   42,966.30x = 64,452.52 × 17,981.19
4. Step 4: Simplify right side
   42,966.30x = 1,158,933,008.10
5. Step 5: Solve for x
   x = 1,158,933,008.10/42,966.30
6. Step 6: Final answer
   x = 26,973.07