Finding the Fourth Proportional to 89,731.61, 123,835.05 and 49,445.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,731.61 : 123,835.05 = 49,445.31 : x
2. Step 2: Convert to fraction form
   89,731.61/123,835.05 = 49,445.31/x
3. Step 3: Cross multiply
   89,731.61x = 123,835.05 × 49,445.31
4. Step 4: Simplify right side
   89,731.61x = 6,123,062,436.12
5. Step 5: Solve for x
   x = 6,123,062,436.12/89,731.61
6. Step 6: Final answer
   x = 68,237.52