Finding the Fourth Proportional to 121,519, 167,702.70 and 71,234.20

Step by Step Solution

1. Step 1: Write the proportion equation
   121,519 : 167,702.70 = 71,234.20 : x
2. Step 2: Convert to fraction form
   121,519/167,702.70 = 71,234.20/x
3. Step 3: Cross multiply
   121,519x = 167,702.70 × 71,234.20
4. Step 4: Simplify right side
   121,519x = 11,946,167,672.34
5. Step 5: Solve for x
   x = 11,946,167,672.34/121,519
6. Step 6: Final answer
   x = 98,306.99