Finding the Fourth Proportional to 71,168, 98,212 and 42,874.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,168 : 98,212 = 42,874.88 : x
2. Step 2: Convert to fraction form
   71,168/98,212 = 42,874.88/x
3. Step 3: Cross multiply
   71,168x = 98,212 × 42,874.88
4. Step 4: Simplify right side
   71,168x = 4,210,827,714.56
5. Step 5: Solve for x
   x = 4,210,827,714.56/71,168
6. Step 6: Final answer
   x = 59,167.43