Finding the Fourth Proportional to 132,938.82, 199,445.91 and 54,109.62

Step by Step Solution

1. Step 1: Write the proportion equation
   132,938.82 : 199,445.91 = 54,109.62 : x
2. Step 2: Convert to fraction form
   132,938.82/199,445.91 = 54,109.62/x
3. Step 3: Cross multiply
   132,938.82x = 199,445.91 × 54,109.62
4. Step 4: Simplify right side
   132,938.82x = 10,791,942,400.65
5. Step 5: Solve for x
   x = 10,791,942,400.65/132,938.82
6. Step 6: Final answer
   x = 81,179.77