Finding the Fourth Proportional to 108,558.72, 149,902.80 and 81,654.36

Step by Step Solution

1. Step 1: Write the proportion equation
   108,558.72 : 149,902.80 = 81,654.36 : x
2. Step 2: Convert to fraction form
   108,558.72/149,902.80 = 81,654.36/x
3. Step 3: Cross multiply
   108,558.72x = 149,902.80 × 81,654.36
4. Step 4: Simplify right side
   108,558.72x = 12,240,217,196.21
5. Step 5: Solve for x
   x = 12,240,217,196.21/108,558.72
6. Step 6: Final answer
   x = 112,752.04