Finding the Fourth Proportional to 1,389,621,743.31, 2,084,499,654.02 and 456,923,941.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,621,743.31 : 2,084,499,654.02 = 456,923,941.83 : x
2. Step 2: Convert to fraction form
   1,389,621,743.31/2,084,499,654.02 = 456,923,941.83/x
3. Step 3: Cross multiply
   1,389,621,743.31x = 2,084,499,654.02 × 456,923,941.83
4. Step 4: Simplify right side
   1,389,621,743.31x = 952,457,798,655,805,056
5. Step 5: Solve for x
   x = 952,457,798,655,805,056/1,389,621,743.31
6. Step 6: Final answer
   x = 685,407,955.97