Finding the Fourth Proportional to 42,112.38, 63,168.53 and 12,530.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,112.38 : 63,168.53 = 12,530.15 : x
2. Step 2: Convert to fraction form
   42,112.38/63,168.53 = 12,530.15/x
3. Step 3: Cross multiply
   42,112.38x = 63,168.53 × 12,530.15
4. Step 4: Simplify right side
   42,112.38x = 791,510,777.69
5. Step 5: Solve for x
   x = 791,510,777.69/42,112.38
6. Step 6: Final answer
   x = 18,795.20