Finding the Fourth Proportional to 42,867.53, 64,341.18 and 21,823.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,867.53 : 64,341.18 = 21,823.32 : x
2. Step 2: Convert to fraction form
   42,867.53/64,341.18 = 21,823.32/x
3. Step 3: Cross multiply
   42,867.53x = 64,341.18 × 21,823.32
4. Step 4: Simplify right side
   42,867.53x = 1,404,138,160.32
5. Step 5: Solve for x
   x = 1,404,138,160.32/42,867.53
6. Step 6: Final answer
   x = 32,755.29