Finding the Fourth Proportional to 79,389.79, 109,715.38 and 65,026.87

Step by Step Solution

1. Step 1: Write the proportion equation
   79,389.79 : 109,715.38 = 65,026.87 : x
2. Step 2: Convert to fraction form
   79,389.79/109,715.38 = 65,026.87/x
3. Step 3: Cross multiply
   79,389.79x = 109,715.38 × 65,026.87
4. Step 4: Simplify right side
   79,389.79x = 7,134,447,315.40
5. Step 5: Solve for x
   x = 7,134,447,315.40/79,389.79
6. Step 6: Final answer
   x = 89,866.06