Finding the Fourth Proportional to 139,969,165.80, 209,953,748.70 and 49,059,949.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,969,165.80 : 209,953,748.70 = 49,059,949.80 : x
2. Step 2: Convert to fraction form
   139,969,165.80/209,953,748.70 = 49,059,949.80/x
3. Step 3: Cross multiply
   139,969,165.80x = 209,953,748.70 × 49,059,949.80
4. Step 4: Simplify right side
   139,969,165.80x = 10,300,320,371,543,814
5. Step 5: Solve for x
   x = 10,300,320,371,543,814/139,969,165.80
6. Step 6: Final answer
   x = 73,589,924.70