Finding the Fourth Proportional to 133,109.71, 183,698.83 and 72,685.96

Step by Step Solution

1. Step 1: Write the proportion equation
   133,109.71 : 183,698.83 = 72,685.96 : x
2. Step 2: Convert to fraction form
   133,109.71/183,698.83 = 72,685.96/x
3. Step 3: Cross multiply
   133,109.71x = 183,698.83 × 72,685.96
4. Step 4: Simplify right side
   133,109.71x = 13,352,325,809.43
5. Step 5: Solve for x
   x = 13,352,325,809.43/133,109.71
6. Step 6: Final answer
   x = 100,310.68