Finding the Fourth Proportional to 89,499.42, 123,511.23 and 49,215.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,499.42 : 123,511.23 = 49,215.42 : x
2. Step 2: Convert to fraction form
   89,499.42/123,511.23 = 49,215.42/x
3. Step 3: Cross multiply
   89,499.42x = 123,511.23 × 49,215.42
4. Step 4: Simplify right side
   89,499.42x = 6,078,657,059.17
5. Step 5: Solve for x
   x = 6,078,657,059.17/89,499.42
6. Step 6: Final answer
   x = 67,918.40