Finding the Fourth Proportional to 42,156.18, 63,219.38 and 18,475.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42,156.18 : 63,219.38 = 18,475.22 : x
2. Step 2: Convert to fraction form
   42,156.18/63,219.38 = 18,475.22/x
3. Step 3: Cross multiply
   42,156.18x = 63,219.38 × 18,475.22
4. Step 4: Simplify right side
   42,156.18x = 1,167,992,019.44
5. Step 5: Solve for x
   x = 1,167,992,019.44/42,156.18
6. Step 6: Final answer
   x = 27,706.31