Finding the Fourth Proportional to 139,724,499.76, 192,815,287.80 and 80,195,594.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,724,499.76 : 192,815,287.80 = 80,195,594.20 : x
2. Step 2: Convert to fraction form
   139,724,499.76/192,815,287.80 = 80,195,594.20/x
3. Step 3: Cross multiply
   139,724,499.76x = 192,815,287.80 × 80,195,594.20
4. Step 4: Simplify right side
   139,724,499.76x = 15,462,936,575,965,012
5. Step 5: Solve for x
   x = 15,462,936,575,965,012/139,724,499.76
6. Step 6: Final answer
   x = 110,667,324.65