Finding the Fourth Proportional to 400,846,413.30, 601,122,139.59 and 138,464,191.41

Step by Step Solution

1. Step 1: Write the proportion equation
   400,846,413.30 : 601,122,139.59 = 138,464,191.41 : x
2. Step 2: Convert to fraction form
   400,846,413.30/601,122,139.59 = 138,464,191.41/x
3. Step 3: Cross multiply
   400,846,413.30x = 601,122,139.59 × 138,464,191.41
4. Step 4: Simplify right side
   400,846,413.30x = 83,233,890,996,978,496
5. Step 5: Solve for x
   x = 83,233,890,996,978,496/400,846,413.30
6. Step 6: Final answer
   x = 207,645,343.04