Finding the Fourth Proportional to 123,459.17, 170,364.81 and 72,473.97

Step by Step Solution

1. Step 1: Write the proportion equation
   123,459.17 : 170,364.81 = 72,473.97 : x
2. Step 2: Convert to fraction form
   123,459.17/170,364.81 = 72,473.97/x
3. Step 3: Cross multiply
   123,459.17x = 170,364.81 × 72,473.97
4. Step 4: Simplify right side
   123,459.17x = 12,347,014,129.00
5. Step 5: Solve for x
   x = 12,347,014,129.00/123,459.17
6. Step 6: Final answer
   x = 100,008.89