Finding the Fourth Proportional to 123,063.37, 169,829.67 and 72,112.75

Step by Step Solution

1. Step 1: Write the proportion equation
   123,063.37 : 169,829.67 = 72,112.75 : x
2. Step 2: Convert to fraction form
   123,063.37/169,829.67 = 72,112.75/x
3. Step 3: Cross multiply
   123,063.37x = 169,829.67 × 72,112.75
4. Step 4: Simplify right side
   123,063.37x = 12,246,884,535.29
5. Step 5: Solve for x
   x = 12,246,884,535.29/123,063.37
6. Step 6: Final answer
   x = 99,516.90