Finding the Fourth Proportional to 89,213.58, 123,105.87 and 51,499.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,213.58 : 123,105.87 = 51,499.98 : x
2. Step 2: Convert to fraction form
   89,213.58/123,105.87 = 51,499.98/x
3. Step 3: Cross multiply
   89,213.58x = 123,105.87 × 51,499.98
4. Step 4: Simplify right side
   89,213.58x = 6,339,949,842.88
5. Step 5: Solve for x
   x = 6,339,949,842.88/89,213.58
6. Step 6: Final answer
   x = 71,064.85