Finding the Fourth Proportional to 139,520.67, 209,276.34 and 60,634.91

Step by Step Solution

1. Step 1: Write the proportion equation
   139,520.67 : 209,276.34 = 60,634.91 : x
2. Step 2: Convert to fraction form
   139,520.67/209,276.34 = 60,634.91/x
3. Step 3: Cross multiply
   139,520.67x = 209,276.34 × 60,634.91
4. Step 4: Simplify right side
   139,520.67x = 12,689,450,994.65
5. Step 5: Solve for x
   x = 12,689,450,994.65/139,520.67
6. Step 6: Final answer
   x = 90,950.33