Finding the Fourth Proportional to 42,876.81, 64,304.82 and 17,903.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,876.81 : 64,304.82 = 17,903.30 : x
2. Step 2: Convert to fraction form
   42,876.81/64,304.82 = 17,903.30/x
3. Step 3: Cross multiply
   42,876.81x = 64,304.82 × 17,903.30
4. Step 4: Simplify right side
   42,876.81x = 1,151,268,162.38
5. Step 5: Solve for x
   x = 1,151,268,162.38/42,876.81
6. Step 6: Final answer
   x = 26,850.60