Finding the Fourth Proportional to 64,116,296,994.48, 88,443,728,932.40 and 39,988,429,663.28

Step by Step Solution

1. Step 1: Write the proportion equation
   64,116,296,994.48 : 88,443,728,932.40 = 39,988,429,663.28 : x
2. Step 2: Convert to fraction form
   64,116,296,994.48/88,443,728,932.40 = 39,988,429,663.28/x
3. Step 3: Cross multiply
   64,116,296,994.48x = 88,443,728,932.40 × 39,988,429,663.28
4. Step 4: Simplify right side
   64,116,296,994.48x = 3,536,725,833,571,479,584,768
5. Step 5: Solve for x
   x = 3,536,725,833,571,479,584,768/64,116,296,994.48
6. Step 6: Final answer
   x = 55,161,105,668.28