Finding the Fourth Proportional to 111,492.18, 167,231.79 and 81,536.76

Step by Step Solution

1. Step 1: Write the proportion equation
   111,492.18 : 167,231.79 = 81,536.76 : x
2. Step 2: Convert to fraction form
   111,492.18/167,231.79 = 81,536.76/x
3. Step 3: Cross multiply
   111,492.18x = 167,231.79 × 81,536.76
4. Step 4: Simplify right side
   111,492.18x = 13,635,538,325.60
5. Step 5: Solve for x
   x = 13,635,538,325.60/111,492.18
6. Step 6: Final answer
   x = 122,300.40