Finding the Fourth Proportional to 89,732, 123,832.72 and 49,990.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,732 : 123,832.72 = 49,990.56 : x
2. Step 2: Convert to fraction form
   89,732/123,832.72 = 49,990.56/x
3. Step 3: Cross multiply
   89,732x = 123,832.72 × 49,990.56
4. Step 4: Simplify right side
   89,732x = 6,190,467,019.12
5. Step 5: Solve for x
   x = 6,190,467,019.12/89,732
6. Step 6: Final answer
   x = 68,988.40