Finding the Fourth Proportional to 128,485,659,559.90, 177,314,462,462.43 and 70,616,090,592.54

Step by Step Solution

1. Step 1: Write the proportion equation
   128,485,659,559.90 : 177,314,462,462.43 = 70,616,090,592.54 : x
2. Step 2: Convert to fraction form
   128,485,659,559.90/177,314,462,462.43 = 70,616,090,592.54/x
3. Step 3: Cross multiply
   128,485,659,559.90x = 177,314,462,462.43 × 70,616,090,592.54
4. Step 4: Simplify right side
   128,485,659,559.90x = 12,521,254,144,614,487,556,096
5. Step 5: Solve for x
   x = 12,521,254,144,614,487,556,096/128,485,659,559.90
6. Step 6: Final answer
   x = 97,452,542,077.48