Finding the Fourth Proportional to 42,008.09, 63,013.89 and 19,539.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,008.09 : 63,013.89 = 19,539.86 : x
2. Step 2: Convert to fraction form
   42,008.09/63,013.89 = 19,539.86/x
3. Step 3: Cross multiply
   42,008.09x = 63,013.89 × 19,539.86
4. Step 4: Simplify right side
   42,008.09x = 1,231,282,273.59
5. Step 5: Solve for x
   x = 1,231,282,273.59/42,008.09
6. Step 6: Final answer
   x = 29,310.60