Finding the Fourth Proportional to 1,238,868,365.58, 1,709,673,587.33 and 674,389,650.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,868,365.58 : 1,709,673,587.33 = 674,389,650.96 : x
2. Step 2: Convert to fraction form
   1,238,868,365.58/1,709,673,587.33 = 674,389,650.96/x
3. Step 3: Cross multiply
   1,238,868,365.58x = 1,709,673,587.33 × 674,389,650.96
4. Step 4: Simplify right side
   1,238,868,365.58x = 1,152,986,173,811,638,016
5. Step 5: Solve for x
   x = 1,152,986,173,811,638,016/1,238,868,365.58
6. Step 6: Final answer
   x = 930,676,903.09