Finding the Fourth Proportional to 42,076.80, 63,118.44 and 12,494.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,076.80 : 63,118.44 = 12,494.16 : x
2. Step 2: Convert to fraction form
   42,076.80/63,118.44 = 12,494.16/x
3. Step 3: Cross multiply
   42,076.80x = 63,118.44 × 12,494.16
4. Step 4: Simplify right side
   42,076.80x = 788,611,888.31
5. Step 5: Solve for x
   x = 788,611,888.31/42,076.80
6. Step 6: Final answer
   x = 18,742.20