Finding the Fourth Proportional to 139,522.60, 209,319.18 and 60,650.92

Step by Step Solution

1. Step 1: Write the proportion equation
   139,522.60 : 209,319.18 = 60,650.92 : x
2. Step 2: Convert to fraction form
   139,522.60/209,319.18 = 60,650.92/x
3. Step 3: Cross multiply
   139,522.60x = 209,319.18 × 60,650.92
4. Step 4: Simplify right side
   139,522.60x = 12,695,400,840.65
5. Step 5: Solve for x
   x = 12,695,400,840.65/139,522.60
6. Step 6: Final answer
   x = 90,991.72