Finding the Fourth Proportional to 132,747.32, 183,012.18 and 128,619.56

Step by Step Solution

1. Step 1: Write the proportion equation
   132,747.32 : 183,012.18 = 128,619.56 : x
2. Step 2: Convert to fraction form
   132,747.32/183,012.18 = 128,619.56/x
3. Step 3: Cross multiply
   132,747.32x = 183,012.18 × 128,619.56
4. Step 4: Simplify right side
   132,747.32x = 23,538,945,151.18
5. Step 5: Solve for x
   x = 23,538,945,151.18/132,747.32
6. Step 6: Final answer
   x = 177,321.44