Finding the Fourth Proportional to 139,968,470.10, 209,952,705.15 and 49,080,249.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,470.10 : 209,952,705.15 = 49,080,249.30 : x
2. Step 2: Convert to fraction form
   139,968,470.10/209,952,705.15 = 49,080,249.30/x
3. Step 3: Cross multiply
   139,968,470.10x = 209,952,705.15 × 49,080,249.30
4. Step 4: Simplify right side
   139,968,470.10x = 10,304,531,109,971,394
5. Step 5: Solve for x
   x = 10,304,531,109,971,394/139,968,470.10
6. Step 6: Final answer
   x = 73,620,373.95