Finding the Fourth Proportional to 123,376.86, 170,253.63 and 72,382.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,376.86 : 170,253.63 = 72,382.50 : x
2. Step 2: Convert to fraction form
   123,376.86/170,253.63 = 72,382.50/x
3. Step 3: Cross multiply
   123,376.86x = 170,253.63 × 72,382.50
4. Step 4: Simplify right side
   123,376.86x = 12,323,383,373.48
5. Step 5: Solve for x
   x = 12,323,383,373.48/123,376.86
6. Step 6: Final answer
   x = 99,884.07