Finding the Fourth Proportional to 511,085,090.71, 766,756,621.27 and 142,619,736.52

Step by Step Solution

1. Step 1: Write the proportion equation
   511,085,090.71 : 766,756,621.27 = 142,619,736.52 : x
2. Step 2: Convert to fraction form
   511,085,090.71/766,756,621.27 = 142,619,736.52/x
3. Step 3: Cross multiply
   511,085,090.71x = 766,756,621.27 × 142,619,736.52
4. Step 4: Simplify right side
   511,085,090.71x = 109,354,627,300,492,832
5. Step 5: Solve for x
   x = 109,354,627,300,492,832/511,085,090.71
6. Step 6: Final answer
   x = 213,965,598.47