Finding the Fourth Proportional to 42,654, 63,981.18 and 13,069.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,654 : 63,981.18 = 13,069.56 : x
2. Step 2: Convert to fraction form
   42,654/63,981.18 = 13,069.56/x
3. Step 3: Cross multiply
   42,654x = 63,981.18 × 13,069.56
4. Step 4: Simplify right side
   42,654x = 836,205,870.88
5. Step 5: Solve for x
   x = 836,205,870.88/42,654
6. Step 6: Final answer
   x = 19,604.40