Finding the Fourth Proportional to 123,979.17, 171,091.95 and 72,994.14

Step by Step Solution

1. Step 1: Write the proportion equation
   123,979.17 : 171,091.95 = 72,994.14 : x
2. Step 2: Convert to fraction form
   123,979.17/171,091.95 = 72,994.14/x
3. Step 3: Cross multiply
   123,979.17x = 171,091.95 × 72,994.14
4. Step 4: Simplify right side
   123,979.17x = 12,488,709,751.17
5. Step 5: Solve for x
   x = 12,488,709,751.17/123,979.17
6. Step 6: Final answer
   x = 100,732.32