Finding the Fourth Proportional to 42,054.88, 63,081.60 and 19,878.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,054.88 : 63,081.60 = 19,878.88 : x
2. Step 2: Convert to fraction form
   42,054.88/63,081.60 = 19,878.88/x
3. Step 3: Cross multiply
   42,054.88x = 63,081.60 × 19,878.88
4. Step 4: Simplify right side
   42,054.88x = 1,253,991,556.61
5. Step 5: Solve for x
   x = 1,253,991,556.61/42,054.88
6. Step 6: Final answer
   x = 29,817.98