Finding the Fourth Proportional to 89,388, 123,355.30 and 49,101.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,388 : 123,355.30 = 49,101.76 : x
2. Step 2: Convert to fraction form
   89,388/123,355.30 = 49,101.76/x
3. Step 3: Cross multiply
   89,388x = 123,355.30 × 49,101.76
4. Step 4: Simplify right side
   89,388x = 6,056,962,335.33
5. Step 5: Solve for x
   x = 6,056,962,335.33/89,388
6. Step 6: Final answer
   x = 67,760.35