Finding the Fourth Proportional to 42,505.59, 63,765.69 and 12,926.41

Step by Step Solution

1. Step 1: Write the proportion equation
   42,505.59 : 63,765.69 = 12,926.41 : x
2. Step 2: Convert to fraction form
   42,505.59/63,765.69 = 12,926.41/x
3. Step 3: Cross multiply
   42,505.59x = 63,765.69 × 12,926.41
4. Step 4: Simplify right side
   42,505.59x = 824,261,452.87
5. Step 5: Solve for x
   x = 824,261,452.87/42,505.59
6. Step 6: Final answer
   x = 19,391.84