Finding the Fourth Proportional to 116,876, 161,279.12 and 65,189.88

Step by Step Solution

1. Step 1: Write the proportion equation
   116,876 : 161,279.12 = 65,189.88 : x
2. Step 2: Convert to fraction form
   116,876/161,279.12 = 65,189.88/x
3. Step 3: Cross multiply
   116,876x = 161,279.12 × 65,189.88
4. Step 4: Simplify right side
   116,876x = 10,513,766,479.31
5. Step 5: Solve for x
   x = 10,513,766,479.31/116,876
6. Step 6: Final answer
   x = 89,956.59