Finding the Fourth Proportional to 123,590.56, 170,636.88 and 73,305.76

Step by Step Solution

1. Step 1: Write the proportion equation
   123,590.56 : 170,636.88 = 73,305.76 : x
2. Step 2: Convert to fraction form
   123,590.56/170,636.88 = 73,305.76/x
3. Step 3: Cross multiply
   123,590.56x = 170,636.88 × 73,305.76
4. Step 4: Simplify right side
   123,590.56x = 12,508,666,172.43
5. Step 5: Solve for x
   x = 12,508,666,172.43/123,590.56
6. Step 6: Final answer
   x = 101,210.53