Finding the Fourth Proportional to 1,666,389,255.33, 2,499,578,900.69 and 422,817,315.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666,389,255.33 : 2,499,578,900.69 = 422,817,315.33 : x
2. Step 2: Convert to fraction form
   1,666,389,255.33/2,499,578,900.69 = 422,817,315.33/x
3. Step 3: Cross multiply
   1,666,389,255.33x = 2,499,578,900.69 × 422,817,315.33
4. Step 4: Simplify right side
   1,666,389,255.33x = 1,056,865,240,243,144,320
5. Step 5: Solve for x
   x = 1,056,865,240,243,144,320/1,666,389,255.33
6. Step 6: Final answer
   x = 634,224,708.82