Finding the Fourth Proportional to 132,908.10, 183,411.72 and 72,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,908.10 : 183,411.72 = 72,478.50 : x
2. Step 2: Convert to fraction form
   132,908.10/183,411.72 = 72,478.50/x
3. Step 3: Cross multiply
   132,908.10x = 183,411.72 × 72,478.50
4. Step 4: Simplify right side
   132,908.10x = 13,293,406,348.02
5. Step 5: Solve for x
   x = 13,293,406,348.02/132,908.10
6. Step 6: Final answer
   x = 100,019.53