Finding the Fourth Proportional to 142,019,942.10, 213,029,913.15 and 113,322,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,019,942.10 : 213,029,913.15 = 113,322,128.10 : x
2. Step 2: Convert to fraction form
   142,019,942.10/213,029,913.15 = 113,322,128.10/x
3. Step 3: Cross multiply
   142,019,942.10x = 213,029,913.15 × 113,322,128.10
4. Step 4: Simplify right side
   142,019,942.10x = 24,141,003,107,116,172
5. Step 5: Solve for x
   x = 24,141,003,107,116,172/142,019,942.10
6. Step 6: Final answer
   x = 169,983,192.15