Finding the Fourth Proportional to 42,877.81, 64,306.32 and 17,904.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,877.81 : 64,306.32 = 17,904.30 : x
2. Step 2: Convert to fraction form
   42,877.81/64,306.32 = 17,904.30/x
3. Step 3: Cross multiply
   42,877.81x = 64,306.32 × 17,904.30
4. Step 4: Simplify right side
   42,877.81x = 1,151,359,645.18
5. Step 5: Solve for x
   x = 1,151,359,645.18/42,877.81
6. Step 6: Final answer
   x = 26,852.11