Finding the Fourth Proportional to 132,940.78, 183,460.46 and 72,511.42

Step by Step Solution

1. Step 1: Write the proportion equation
   132,940.78 : 183,460.46 = 72,511.42 : x
2. Step 2: Convert to fraction form
   132,940.78/183,460.46 = 72,511.42/x
3. Step 3: Cross multiply
   132,940.78x = 183,460.46 × 72,511.42
4. Step 4: Simplify right side
   132,940.78x = 13,302,978,468.45
5. Step 5: Solve for x
   x = 13,302,978,468.45/132,940.78
6. Step 6: Final answer
   x = 100,066.95