Finding the Fourth Proportional to 123,071.98, 169,896.04 and 72,077.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,071.98 : 169,896.04 = 72,077.62 : x
2. Step 2: Convert to fraction form
   123,071.98/169,896.04 = 72,077.62/x
3. Step 3: Cross multiply
   123,071.98x = 169,896.04 × 72,077.62
4. Step 4: Simplify right side
   123,071.98x = 12,245,702,210.62
5. Step 5: Solve for x
   x = 12,245,702,210.62/123,071.98
6. Step 6: Final answer
   x = 99,500.33