Finding the Fourth Proportional to 89,242.08, 133,134.06 and 82,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,242.08 : 133,134.06 = 82,878.72 : x
2. Step 2: Convert to fraction form
   89,242.08/133,134.06 = 82,878.72/x
3. Step 3: Cross multiply
   89,242.08x = 133,134.06 × 82,878.72
4. Step 4: Simplify right side
   89,242.08x = 11,033,980,481.20
5. Step 5: Solve for x
   x = 11,033,980,481.20/89,242.08
6. Step 6: Final answer
   x = 123,641.01