Finding the Fourth Proportional to 1,389,621,868.02, 2,084,499,840.96 and 456,924,066.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,621,868.02 : 2,084,499,840.96 = 456,924,066.48 : x
2. Step 2: Convert to fraction form
   1,389,621,868.02/2,084,499,840.96 = 456,924,066.48/x
3. Step 3: Cross multiply
   1,389,621,868.02x = 2,084,499,840.96 × 456,924,066.48
4. Step 4: Simplify right side
   1,389,621,868.02x = 952,458,143,908,356,480
5. Step 5: Solve for x
   x = 952,458,143,908,356,480/1,389,621,868.02
6. Step 6: Final answer
   x = 685,408,142.91