Finding the Fourth Proportional to 139,968,504.80, 209,952,757.20 and 49,059,288.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,504.80 : 209,952,757.20 = 49,059,288.80 : x
2. Step 2: Convert to fraction form
   139,968,504.80/209,952,757.20 = 49,059,288.80/x
3. Step 3: Cross multiply
   139,968,504.80x = 209,952,757.20 × 49,059,288.80
4. Step 4: Simplify right side
   139,968,504.80x = 10,300,132,949,831,078
5. Step 5: Solve for x
   x = 10,300,132,949,831,078/139,968,504.80
6. Step 6: Final answer
   x = 73,588,933.20