Finding the Fourth Proportional to 111,071.56, 153,119.33 and 79,185.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,071.56 : 153,119.33 = 79,185.10 : x
2. Step 2: Convert to fraction form
   111,071.56/153,119.33 = 79,185.10/x
3. Step 3: Cross multiply
   111,071.56x = 153,119.33 × 79,185.10
4. Step 4: Simplify right side
   111,071.56x = 12,124,769,457.98
5. Step 5: Solve for x
   x = 12,124,769,457.98/111,071.56
6. Step 6: Final answer
   x = 109,161.78