Finding the Fourth Proportional to 123,749.82, 170,645.64 and 73,439.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,749.82 : 170,645.64 = 73,439.10 : x
2. Step 2: Convert to fraction form
   123,749.82/170,645.64 = 73,439.10/x
3. Step 3: Cross multiply
   123,749.82x = 170,645.64 × 73,439.10
4. Step 4: Simplify right side
   123,749.82x = 12,532,062,220.52
5. Step 5: Solve for x
   x = 12,532,062,220.52/123,749.82
6. Step 6: Final answer
   x = 101,269.34