Finding the Fourth Proportional to 581,157,680.38, 801,504,196.06 and 491,072,507.52

Step by Step Solution

1. Step 1: Write the proportion equation
   581,157,680.38 : 801,504,196.06 = 491,072,507.52 : x
2. Step 2: Convert to fraction form
   581,157,680.38/801,504,196.06 = 491,072,507.52/x
3. Step 3: Cross multiply
   581,157,680.38x = 801,504,196.06 × 491,072,507.52
4. Step 4: Simplify right side
   581,157,680.38x = 393,596,675,349,068,608
5. Step 5: Solve for x
   x = 393,596,675,349,068,608/581,157,680.38
6. Step 6: Final answer
   x = 677,263,139.83