Finding the Fourth Proportional to 89,170.91, 123,071.46 and 67,731.63

Step by Step Solution

1. Step 1: Write the proportion equation
   89,170.91 : 123,071.46 = 67,731.63 : x
2. Step 2: Convert to fraction form
   89,170.91/123,071.46 = 67,731.63/x
3. Step 3: Cross multiply
   89,170.91x = 123,071.46 × 67,731.63
4. Step 4: Simplify right side
   89,170.91x = 8,335,830,592.28
5. Step 5: Solve for x
   x = 8,335,830,592.28/89,170.91
6. Step 6: Final answer
   x = 93,481.50