Finding the Fourth Proportional to 52,061.84, 78,092.07 and 12,619.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,061.84 : 78,092.07 = 12,619.31 : x
2. Step 2: Convert to fraction form
   52,061.84/78,092.07 = 12,619.31/x
3. Step 3: Cross multiply
   52,061.84x = 78,092.07 × 12,619.31
4. Step 4: Simplify right side
   52,061.84x = 985,468,039.87
5. Step 5: Solve for x
   x = 985,468,039.87/52,061.84
6. Step 6: Final answer
   x = 18,928.80