Finding the Fourth Proportional to 1,551,978,271.99, 2,141,410,300.29 and 891,801,004.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551,978,271.99 : 2,141,410,300.29 = 891,801,004.15 : x
2. Step 2: Convert to fraction form
   1,551,978,271.99/2,141,410,300.29 = 891,801,004.15/x
3. Step 3: Cross multiply
   1,551,978,271.99x = 2,141,410,300.29 × 891,801,004.15
4. Step 4: Simplify right side
   1,551,978,271.99x = 1,909,711,856,095,774,976
5. Step 5: Solve for x
   x = 1,909,711,856,095,774,976/1,551,978,271.99
6. Step 6: Final answer
   x = 1,230,501,670.39