Finding the Fourth Proportional to 71,585,443.25, 107,377,478.78 and 42,418,286.78

Step by Step Solution

1. Step 1: Write the proportion equation
   71,585,443.25 : 107,377,478.78 = 42,418,286.78 : x
2. Step 2: Convert to fraction form
   71,585,443.25/107,377,478.78 = 42,418,286.78/x
3. Step 3: Cross multiply
   71,585,443.25x = 107,377,478.78 × 42,418,286.78
4. Step 4: Simplify right side
   71,585,443.25x = 4,554,768,687,854,426
5. Step 5: Solve for x
   x = 4,554,768,687,854,426/71,585,443.25
6. Step 6: Final answer
   x = 63,627,023.61