Finding the Fourth Proportional to 133,196.22, 183,810.09 and 72,770.31

Step by Step Solution

1. Step 1: Write the proportion equation
   133,196.22 : 183,810.09 = 72,770.31 : x
2. Step 2: Convert to fraction form
   133,196.22/183,810.09 = 72,770.31/x
3. Step 3: Cross multiply
   133,196.22x = 183,810.09 × 72,770.31
4. Step 4: Simplify right side
   133,196.22x = 13,375,917,230.43
5. Step 5: Solve for x
   x = 13,375,917,230.43/133,196.22
6. Step 6: Final answer
   x = 100,422.65