Finding the Fourth Proportional to 89,326.72, 133,872.72 and 49,902.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,326.72 : 133,872.72 = 49,902.40 : x
2. Step 2: Convert to fraction form
   89,326.72/133,872.72 = 49,902.40/x
3. Step 3: Cross multiply
   89,326.72x = 133,872.72 × 49,902.40
4. Step 4: Simplify right side
   89,326.72x = 6,680,570,022.53
5. Step 5: Solve for x
   x = 6,680,570,022.53/89,326.72
6. Step 6: Final answer
   x = 74,788.04