Finding the Fourth Proportional to 123,731.15, 170,826.37 and 85,035.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,731.15 : 170,826.37 = 85,035.62 : x
2. Step 2: Convert to fraction form
   123,731.15/170,826.37 = 85,035.62/x
3. Step 3: Cross multiply
   123,731.15x = 170,826.37 × 85,035.62
4. Step 4: Simplify right side
   123,731.15x = 14,526,326,499.78
5. Step 5: Solve for x
   x = 14,526,326,499.78/123,731.15
6. Step 6: Final answer
   x = 117,402.34