Finding the Fourth Proportional to 89,761, 123,869.50 and 49,474.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,761 : 123,869.50 = 49,474.76 : x
2. Step 2: Convert to fraction form
   89,761/123,869.50 = 49,474.76/x
3. Step 3: Cross multiply
   89,761x = 123,869.50 × 49,474.76
4. Step 4: Simplify right side
   89,761x = 6,128,413,783.82
5. Step 5: Solve for x
   x = 6,128,413,783.82/89,761
6. Step 6: Final answer
   x = 68,274.79