Finding the Fourth Proportional to 139,467.80, 209,084.12 and 60,522.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,467.80 : 209,084.12 = 60,522.56 : x
2. Step 2: Convert to fraction form
   139,467.80/209,084.12 = 60,522.56/x
3. Step 3: Cross multiply
   139,467.80x = 209,084.12 × 60,522.56
4. Step 4: Simplify right side
   139,467.80x = 12,654,306,197.75
5. Step 5: Solve for x
   x = 12,654,306,197.75/139,467.80
6. Step 6: Final answer
   x = 90,732.82