Finding the Fourth Proportional to 109,715.10, 153,808.50 and 109,715.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,715.10 : 153,808.50 = 109,715.10 : x
2. Step 2: Convert to fraction form
   109,715.10/153,808.50 = 109,715.10/x
3. Step 3: Cross multiply
   109,715.10x = 153,808.50 × 109,715.10
4. Step 4: Simplify right side
   109,715.10x = 16,875,114,958.35
5. Step 5: Solve for x
   x = 16,875,114,958.35/109,715.10
6. Step 6: Final answer
   x = 153,808.50