Finding the Fourth Proportional to 42,172.82, 63,276.72 and 18,468.11

Step by Step Solution

1. Step 1: Write the proportion equation
   42,172.82 : 63,276.72 = 18,468.11 : x
2. Step 2: Convert to fraction form
   42,172.82/63,276.72 = 18,468.11/x
3. Step 3: Cross multiply
   42,172.82x = 63,276.72 × 18,468.11
4. Step 4: Simplify right side
   42,172.82x = 1,168,601,514.34
5. Step 5: Solve for x
   x = 1,168,601,514.34/42,172.82
6. Step 6: Final answer
   x = 27,709.83