Finding the Fourth Proportional to 133,141.89, 183,736.47 and 72,712.52

Step by Step Solution

1. Step 1: Write the proportion equation
   133,141.89 : 183,736.47 = 72,712.52 : x
2. Step 2: Convert to fraction form
   133,141.89/183,736.47 = 72,712.52/x
3. Step 3: Cross multiply
   133,141.89x = 183,736.47 × 72,712.52
4. Step 4: Simplify right side
   133,141.89x = 13,359,940,830.92
5. Step 5: Solve for x
   x = 13,359,940,830.92/133,141.89
6. Step 6: Final answer
   x = 100,343.63