Finding the Fourth Proportional to 52,123.86, 78,184.71 and 12,681.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,123.86 : 78,184.71 = 12,681.18 : x
2. Step 2: Convert to fraction form
   52,123.86/78,184.71 = 12,681.18/x
3. Step 3: Cross multiply
   52,123.86x = 78,184.71 × 12,681.18
4. Step 4: Simplify right side
   52,123.86x = 991,474,380.76
5. Step 5: Solve for x
   x = 991,474,380.76/52,123.86
6. Step 6: Final answer
   x = 19,021.51