Finding the Fourth Proportional to 1,274,379,892.56, 1,911,771,392.76 and 456,474,085.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,274,379,892.56 : 1,911,771,392.76 = 456,474,085.20 : x
2. Step 2: Convert to fraction form
   1,274,379,892.56/1,911,771,392.76 = 456,474,085.20/x
3. Step 3: Cross multiply
   1,274,379,892.56x = 1,911,771,392.76 × 456,474,085.20
4. Step 4: Simplify right side
   1,274,379,892.56x = 872,674,097,621,650,816
5. Step 5: Solve for x
   x = 872,674,097,621,650,816/1,274,379,892.56
6. Step 6: Final answer
   x = 684,783,323.02