Finding the Fourth Proportional to 89,698, 123,783.28 and 51,994.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,698 : 123,783.28 = 51,994.12 : x
2. Step 2: Convert to fraction form
   89,698/123,783.28 = 51,994.12/x
3. Step 3: Cross multiply
   89,698x = 123,783.28 × 51,994.12
4. Step 4: Simplify right side
   89,698x = 6,436,002,714.31
5. Step 5: Solve for x
   x = 6,436,002,714.31/89,698
6. Step 6: Final answer
   x = 71,751.91