Finding the Fourth Proportional to 139,807,719.28, 193,017,413.46 and 124,294,956.49

Step by Step Solution

1. Step 1: Write the proportion equation
   139,807,719.28 : 193,017,413.46 = 124,294,956.49 : x
2. Step 2: Convert to fraction form
   139,807,719.28/193,017,413.46 = 124,294,956.49/x
3. Step 3: Cross multiply
   139,807,719.28x = 193,017,413.46 × 124,294,956.49
4. Step 4: Simplify right side
   139,807,719.28x = 23,991,091,007,823,040
5. Step 5: Solve for x
   x = 23,991,091,007,823,040/139,807,719.28
6. Step 6: Final answer
   x = 171,600,617.84