Finding the Fourth Proportional to 132,659.31, 183,068.67 and 72,229.80

Step by Step Solution

1. Step 1: Write the proportion equation
   132,659.31 : 183,068.67 = 72,229.80 : x
2. Step 2: Convert to fraction form
   132,659.31/183,068.67 = 72,229.80/x
3. Step 3: Cross multiply
   132,659.31x = 183,068.67 × 72,229.80
4. Step 4: Simplify right side
   132,659.31x = 13,223,013,420.37
5. Step 5: Solve for x
   x = 13,223,013,420.37/132,659.31
6. Step 6: Final answer
   x = 99,676.48