Finding the Fourth Proportional to 1,407,122,061.13, 2,111,007,355.76 and 486,998,410.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407,122,061.13 : 2,111,007,355.76 = 486,998,410.69 : x
2. Step 2: Convert to fraction form
   1,407,122,061.13/2,111,007,355.76 = 486,998,410.69/x
3. Step 3: Cross multiply
   1,407,122,061.13x = 2,111,007,355.76 × 486,998,410.69
4. Step 4: Simplify right side
   1,407,122,061.13x = 1,028,057,227,210,019,456
5. Step 5: Solve for x
   x = 1,028,057,227,210,019,456/1,407,122,061.13
6. Step 6: Final answer
   x = 730,609,842.32