Finding the Fourth Proportional to 64,116,296,786.88, 88,443,728,647 and 39,988,429,456.20

Step by Step Solution

1. Step 1: Write the proportion equation
   64,116,296,786.88 : 88,443,728,647 = 39,988,429,456.20 : x
2. Step 2: Convert to fraction form
   64,116,296,786.88/88,443,728,647 = 39,988,429,456.20/x
3. Step 3: Cross multiply
   64,116,296,786.88x = 88,443,728,647 × 39,988,429,456.20
4. Step 4: Simplify right side
   64,116,296,786.88x = 3,536,725,803,843,854,532,608
5. Step 5: Solve for x
   x = 3,536,725,803,843,854,532,608/64,116,296,786.88
6. Step 6: Final answer
   x = 55,161,105,383.23