Finding the Fourth Proportional to 89,756.32, 123,864.56 and 49,471.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,756.32 : 123,864.56 = 49,471.60 : x
2. Step 2: Convert to fraction form
   89,756.32/123,864.56 = 49,471.60/x
3. Step 3: Cross multiply
   89,756.32x = 123,864.56 × 49,471.60
4. Step 4: Simplify right side
   89,756.32x = 6,127,777,966.50
5. Step 5: Solve for x
   x = 6,127,777,966.50/89,756.32
6. Step 6: Final answer
   x = 68,271.27