Finding the Fourth Proportional to 89,756.83, 123,862.80 and 48,921.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,756.83 : 123,862.80 = 48,921.31 : x
2. Step 2: Convert to fraction form
   89,756.83/123,862.80 = 48,921.31/x
3. Step 3: Cross multiply
   89,756.83x = 123,862.80 × 48,921.31
4. Step 4: Simplify right side
   89,756.83x = 6,059,530,436.27
5. Step 5: Solve for x
   x = 6,059,530,436.27/89,756.83
6. Step 6: Final answer
   x = 67,510.52