Finding the Fourth Proportional to 123,688.10, 170,689.52 and 67,099.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123,688.10 : 170,689.52 = 67,099.47 : x
2. Step 2: Convert to fraction form
   123,688.10/170,689.52 = 67,099.47/x
3. Step 3: Cross multiply
   123,688.10x = 170,689.52 × 67,099.47
4. Step 4: Simplify right side
   123,688.10x = 11,453,176,494.30
5. Step 5: Solve for x
   x = 11,453,176,494.30/123,688.10
6. Step 6: Final answer
   x = 92,597.24