Finding the Fourth Proportional to 139,223,042.49, 208,932,698.82 and 65,450,189.73

Step by Step Solution

1. Step 1: Write the proportion equation
   139,223,042.49 : 208,932,698.82 = 65,450,189.73 : x
2. Step 2: Convert to fraction form
   139,223,042.49/208,932,698.82 = 65,450,189.73/x
3. Step 3: Cross multiply
   139,223,042.49x = 208,932,698.82 × 65,450,189.73
4. Step 4: Simplify right side
   139,223,042.49x = 13,674,684,778,569,946
5. Step 5: Solve for x
   x = 13,674,684,778,569,946/139,223,042.49
6. Step 6: Final answer
   x = 98,221,418.91