Finding the Fourth Proportional to 139,583.32, 209,341.86 and 49,618.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,583.32 : 209,341.86 = 49,618.60 : x
2. Step 2: Convert to fraction form
   139,583.32/209,341.86 = 49,618.60/x
3. Step 3: Cross multiply
   139,583.32x = 209,341.86 × 49,618.60
4. Step 4: Simplify right side
   139,583.32x = 10,387,250,014.60
5. Step 5: Solve for x
   x = 10,387,250,014.60/139,583.32
6. Step 6: Final answer
   x = 74,416.13