Finding the Fourth Proportional to 42,943.14, 64,405.35 and 21,860.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,943.14 : 64,405.35 = 21,860.82 : x
2. Step 2: Convert to fraction form
   42,943.14/64,405.35 = 21,860.82/x
3. Step 3: Cross multiply
   42,943.14x = 64,405.35 × 21,860.82
4. Step 4: Simplify right side
   42,943.14x = 1,407,953,763.39
5. Step 5: Solve for x
   x = 1,407,953,763.39/42,943.14
6. Step 6: Final answer
   x = 32,786.47