Finding the Fourth Proportional to 1,551,978,270.99, 2,141,410,298.91 and 891,801,003.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551,978,270.99 : 2,141,410,298.91 = 891,801,003.15 : x
2. Step 2: Convert to fraction form
   1,551,978,270.99/2,141,410,298.91 = 891,801,003.15/x
3. Step 3: Cross multiply
   1,551,978,270.99x = 2,141,410,298.91 × 891,801,003.15
4. Step 4: Simplify right side
   1,551,978,270.99x = 1,909,711,852,723,679,488
5. Step 5: Solve for x
   x = 1,909,711,852,723,679,488/1,551,978,270.99
6. Step 6: Final answer
   x = 1,230,501,669.01