Finding the Fourth Proportional to 2,025,744,373.89, 3,038,559,873.80 and 645,641,698.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,025,744,373.89 : 3,038,559,873.80 = 645,641,698.05 : x
2. Step 2: Convert to fraction form
   2,025,744,373.89/3,038,559,873.80 = 645,641,698.05/x
3. Step 3: Cross multiply
   2,025,744,373.89x = 3,038,559,873.80 × 645,641,698.05
4. Step 4: Simplify right side
   2,025,744,373.89x = 1,961,820,956,543,597,312
5. Step 5: Solve for x
   x = 1,961,820,956,543,597,312/2,025,744,373.89
6. Step 6: Final answer
   x = 968,444,479.88