Finding the Fourth Proportional to 139,098.60, 208,523.16 and 50,331.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,098.60 : 208,523.16 = 50,331.24 : x
2. Step 2: Convert to fraction form
   139,098.60/208,523.16 = 50,331.24/x
3. Step 3: Cross multiply
   139,098.60x = 208,523.16 × 50,331.24
4. Step 4: Simplify right side
   139,098.60x = 10,495,229,211.52
5. Step 5: Solve for x
   x = 10,495,229,211.52/139,098.60
6. Step 6: Final answer
   x = 75,451.72