Finding the Fourth Proportional to 142,621,543.43, 213,870,018.12 and 50,474,656.13

Step by Step Solution

1. Step 1: Write the proportion equation
   142,621,543.43 : 213,870,018.12 = 50,474,656.13 : x
2. Step 2: Convert to fraction form
   142,621,543.43/213,870,018.12 = 50,474,656.13/x
3. Step 3: Cross multiply
   142,621,543.43x = 213,870,018.12 × 50,474,656.13
4. Step 4: Simplify right side
   142,621,543.43x = 10,795,015,620,054,520
5. Step 5: Solve for x
   x = 10,795,015,620,054,520/142,621,543.43
6. Step 6: Final answer
   x = 75,689,936.88