Finding the Fourth Proportional to 336,068,097.82, 503,814,616.62 and 128,955,139.18

Step by Step Solution

1. Step 1: Write the proportion equation
   336,068,097.82 : 503,814,616.62 = 128,955,139.18 : x
2. Step 2: Convert to fraction form
   336,068,097.82/503,814,616.62 = 128,955,139.18/x
3. Step 3: Cross multiply
   336,068,097.82x = 503,814,616.62 × 128,955,139.18
4. Step 4: Simplify right side
   336,068,097.82x = 64,969,484,007,150,448
5. Step 5: Solve for x
   x = 64,969,484,007,150,448/336,068,097.82
6. Step 6: Final answer
   x = 193,322,378.50