Finding the Fourth Proportional to 238,862,153,505.57, 329,629,759,231.29 and 128,996,488,989.59

Step by Step Solution

1. Step 1: Write the proportion equation
   238,862,153,505.57 : 329,629,759,231.29 = 128,996,488,989.59 : x
2. Step 2: Convert to fraction form
   238,862,153,505.57/329,629,759,231.29 = 128,996,488,989.59/x
3. Step 3: Cross multiply
   238,862,153,505.57x = 329,629,759,231.29 × 128,996,488,989.59
4. Step 4: Simplify right side
   238,862,153,505.57x = 42,521,081,607,320,303,042,560
5. Step 5: Solve for x
   x = 42,521,081,607,320,303,042,560/238,862,153,505.57
6. Step 6: Final answer
   x = 178,015,147,997.60