Finding the Fourth Proportional to 424,632,947.38, 636,986,203.71 and 129,594,443.59

Step by Step Solution

1. Step 1: Write the proportion equation
   424,632,947.38 : 636,986,203.71 = 129,594,443.59 : x
2. Step 2: Convert to fraction form
   424,632,947.38/636,986,203.71 = 129,594,443.59/x
3. Step 3: Cross multiply
   424,632,947.38x = 636,986,203.71 × 129,594,443.59
4. Step 4: Simplify right side
   424,632,947.38x = 82,549,872,644,303,856
5. Step 5: Solve for x
   x = 82,549,872,644,303,856/424,632,947.38
6. Step 6: Final answer
   x = 194,402,891.14