Finding the Fourth Proportional to 133,114.05, 183,704.83 and 72,690.30

Step by Step Solution

1. Step 1: Write the proportion equation
   133,114.05 : 183,704.83 = 72,690.30 : x
2. Step 2: Convert to fraction form
   133,114.05/183,704.83 = 72,690.30/x
3. Step 3: Cross multiply
   133,114.05x = 183,704.83 × 72,690.30
4. Step 4: Simplify right side
   133,114.05x = 13,353,559,022.42
5. Step 5: Solve for x
   x = 13,353,559,022.42/133,114.05
6. Step 6: Final answer
   x = 100,316.68