Finding the Fourth Proportional to 128,231,438,446.80, 179,157,096,111.60 and 128,231,438,446.80

Step by Step Solution

1. Step 1: Write the proportion equation
   128,231,438,446.80 : 179,157,096,111.60 = 128,231,438,446.80 : x
2. Step 2: Convert to fraction form
   128,231,438,446.80/179,157,096,111.60 = 128,231,438,446.80/x
3. Step 3: Cross multiply
   128,231,438,446.80x = 179,157,096,111.60 × 128,231,438,446.80
4. Step 4: Simplify right side
   128,231,438,446.80x = 22,973,572,142,342,067,978,240
5. Step 5: Solve for x
   x = 22,973,572,142,342,067,978,240/128,231,438,446.80
6. Step 6: Final answer
   x = 179,157,096,111.60