Finding the Fourth Proportional to 1,389,828,100.02, 2,084,740,389.49 and 354,689,004.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,828,100.02 : 2,084,740,389.49 = 354,689,004.21 : x
2. Step 2: Convert to fraction form
   1,389,828,100.02/2,084,740,389.49 = 354,689,004.21/x
3. Step 3: Cross multiply
   1,389,828,100.02x = 2,084,740,389.49 × 354,689,004.21
4. Step 4: Simplify right side
   1,389,828,100.02x = 739,434,492,780,152,192
5. Step 5: Solve for x
   x = 739,434,492,780,152,192/1,389,828,100.02
6. Step 6: Final answer
   x = 532,033,057.02