Finding the Fourth Proportional to 256,871,662.00, 354,483,122.17 and 139,396,992.56

Step by Step Solution

1. Step 1: Write the proportion equation
   256,871,662.00 : 354,483,122.17 = 139,396,992.56 : x
2. Step 2: Convert to fraction form
   256,871,662.00/354,483,122.17 = 139,396,992.56/x
3. Step 3: Cross multiply
   256,871,662.00x = 354,483,122.17 × 139,396,992.56
4. Step 4: Simplify right side
   256,871,662.00x = 49,413,881,141,656,160
5. Step 5: Solve for x
   x = 49,413,881,141,656,160/256,871,662.00
6. Step 6: Final answer
   x = 192,367,973.79