Finding the Fourth Proportional to 108,177.42, 149,428.90 and 87,036.42

Step by Step Solution

1. Step 1: Write the proportion equation
   108,177.42 : 149,428.90 = 87,036.42 : x
2. Step 2: Convert to fraction form
   108,177.42/149,428.90 = 87,036.42/x
3. Step 3: Cross multiply
   108,177.42x = 149,428.90 × 87,036.42
4. Step 4: Simplify right side
   108,177.42x = 13,005,756,500.54
5. Step 5: Solve for x
   x = 13,005,756,500.54/108,177.42
6. Step 6: Final answer
   x = 120,226.17