Finding the Fourth Proportional to 200,613,062.88, 276,589,740.56 and 129,923,766.32

Step by Step Solution

1. Step 1: Write the proportion equation
   200,613,062.88 : 276,589,740.56 = 129,923,766.32 : x
2. Step 2: Convert to fraction form
   200,613,062.88/276,589,740.56 = 129,923,766.32/x
3. Step 3: Cross multiply
   200,613,062.88x = 276,589,740.56 × 129,923,766.32
4. Step 4: Simplify right side
   200,613,062.88x = 35,935,580,816,994,300
5. Step 5: Solve for x
   x = 35,935,580,816,994,300/200,613,062.88
6. Step 6: Final answer
   x = 179,128,817.94