Finding the Fourth Proportional to 89,381.89, 134,129.31 and 49,964.86

Step by Step Solution

1. Step 1: Write the proportion equation
   89,381.89 : 134,129.31 = 49,964.86 : x
2. Step 2: Convert to fraction form
   89,381.89/134,129.31 = 49,964.86/x
3. Step 3: Cross multiply
   89,381.89x = 134,129.31 × 49,964.86
4. Step 4: Simplify right side
   89,381.89x = 6,701,752,196.05
5. Step 5: Solve for x
   x = 6,701,752,196.05/89,381.89
6. Step 6: Final answer
   x = 74,978.86