Finding the Fourth Proportional to 42,018.56, 63,019.02 and 18,630.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.56 : 63,019.02 = 18,630.08 : x
2. Step 2: Convert to fraction form
   42,018.56/63,019.02 = 18,630.08/x
3. Step 3: Cross multiply
   42,018.56x = 63,019.02 × 18,630.08
4. Step 4: Simplify right side
   42,018.56x = 1,174,049,384.12
5. Step 5: Solve for x
   x = 1,174,049,384.12/42,018.56
6. Step 6: Final answer
   x = 27,941.21