Finding the Fourth Proportional to 52,142.34, 78,211.98 and 12,698.88

Step by Step Solution

1. Step 1: Write the proportion equation
   52,142.34 : 78,211.98 = 12,698.88 : x
2. Step 2: Convert to fraction form
   52,142.34/78,211.98 = 12,698.88/x
3. Step 3: Cross multiply
   52,142.34x = 78,211.98 × 12,698.88
4. Step 4: Simplify right side
   52,142.34x = 993,204,548.58
5. Step 5: Solve for x
   x = 993,204,548.58/52,142.34
6. Step 6: Final answer
   x = 19,047.95