Finding the Fourth Proportional to 89,496.88, 123,503.20 and 49,210.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,496.88 : 123,503.20 = 49,210.72 : x
2. Step 2: Convert to fraction form
   89,496.88/123,503.20 = 49,210.72/x
3. Step 3: Cross multiply
   89,496.88x = 123,503.20 × 49,210.72
4. Step 4: Simplify right side
   89,496.88x = 6,077,681,394.30
5. Step 5: Solve for x
   x = 6,077,681,394.30/89,496.88
6. Step 6: Final answer
   x = 67,909.42