Finding the Fourth Proportional to 123,861.98, 170,900.26 and 72,876.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,861.98 : 170,900.26 = 72,876.94 : x
2. Step 2: Convert to fraction form
   123,861.98/170,900.26 = 72,876.94/x
3. Step 3: Cross multiply
   123,861.98x = 170,900.26 × 72,876.94
4. Step 4: Simplify right side
   123,861.98x = 12,454,687,994.00
5. Step 5: Solve for x
   x = 12,454,687,994.00/123,861.98
6. Step 6: Final answer
   x = 100,552.95