Finding the Fourth Proportional to 52,676.86, 78,978.37 and 19,392.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,676.86 : 78,978.37 = 19,392.60 : x
2. Step 2: Convert to fraction form
   52,676.86/78,978.37 = 19,392.60/x
3. Step 3: Cross multiply
   52,676.86x = 78,978.37 × 19,392.60
4. Step 4: Simplify right side
   52,676.86x = 1,531,595,938.06
5. Step 5: Solve for x
   x = 1,531,595,938.06/52,676.86
6. Step 6: Final answer
   x = 29,075.31