Finding the Fourth Proportional to 198,735,196.61, 298,371,613.67 and 137,171,292.41

Step by Step Solution

1. Step 1: Write the proportion equation
   198,735,196.61 : 298,371,613.67 = 137,171,292.41 : x
2. Step 2: Convert to fraction form
   198,735,196.61/298,371,613.67 = 137,171,292.41/x
3. Step 3: Cross multiply
   198,735,196.61x = 298,371,613.67 × 137,171,292.41
4. Step 4: Simplify right side
   198,735,196.61x = 40,928,019,865,571,128
5. Step 5: Solve for x
   x = 40,928,019,865,571,128/198,735,196.61
6. Step 6: Final answer
   x = 205,942,483.08