Finding the Fourth Proportional to 89,213.08, 123,105.18 and 51,499.48

Step by Step Solution

1. Step 1: Write the proportion equation
   89,213.08 : 123,105.18 = 51,499.48 : x
2. Step 2: Convert to fraction form
   89,213.08/123,105.18 = 51,499.48/x
3. Step 3: Cross multiply
   89,213.08x = 123,105.18 × 51,499.48
4. Step 4: Simplify right side
   89,213.08x = 6,339,852,755.31
5. Step 5: Solve for x
   x = 6,339,852,755.31/89,213.08
6. Step 6: Final answer
   x = 71,064.16