Finding the Fourth Proportional to 42,092.16, 63,127.32 and 12,503.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,092.16 : 63,127.32 = 12,503.28 : x
2. Step 2: Convert to fraction form
   42,092.16/63,127.32 = 12,503.28/x
3. Step 3: Cross multiply
   42,092.16x = 63,127.32 × 12,503.28
4. Step 4: Simplify right side
   42,092.16x = 789,298,557.61
5. Step 5: Solve for x
   x = 789,298,557.61/42,092.16
6. Step 6: Final answer
   x = 18,751.68