Finding the Fourth Proportional to 31,100.83, 42,917.59 and 17,670.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.83 : 42,917.59 = 17,670.31 : x
2. Step 2: Convert to fraction form
   31,100.83/42,917.59 = 17,670.31/x
3. Step 3: Cross multiply
   31,100.83x = 42,917.59 × 17,670.31
4. Step 4: Simplify right side
   31,100.83x = 758,367,119.75
5. Step 5: Solve for x
   x = 758,367,119.75/31,100.83
6. Step 6: Final answer
   x = 24,384.14