Finding the Fourth Proportional to 132,904.61, 183,412.79 and 72,478.56

Step by Step Solution

1. Step 1: Write the proportion equation
   132,904.61 : 183,412.79 = 72,478.56 : x
2. Step 2: Convert to fraction form
   132,904.61/183,412.79 = 72,478.56/x
3. Step 3: Cross multiply
   132,904.61x = 183,412.79 × 72,478.56
4. Step 4: Simplify right side
   132,904.61x = 13,293,494,904.78
5. Step 5: Solve for x
   x = 13,293,494,904.78/132,904.61
6. Step 6: Final answer
   x = 100,022.83