Finding the Fourth Proportional to 111,802.30, 167,266.05 and 72,436.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,802.30 : 167,266.05 = 72,436.30 : x
2. Step 2: Convert to fraction form
   111,802.30/167,266.05 = 72,436.30/x
3. Step 3: Cross multiply
   111,802.30x = 167,266.05 × 72,436.30
4. Step 4: Simplify right side
   111,802.30x = 12,116,133,777.62
5. Step 5: Solve for x
   x = 12,116,133,777.62/111,802.30
6. Step 6: Final answer
   x = 108,371.06