Finding the Fourth Proportional to 83,695.72, 125,565.34 and 31,120.36

Step by Step Solution

1. Step 1: Write the proportion equation
   83,695.72 : 125,565.34 = 31,120.36 : x
2. Step 2: Convert to fraction form
   83,695.72/125,565.34 = 31,120.36/x
3. Step 3: Cross multiply
   83,695.72x = 125,565.34 × 31,120.36
4. Step 4: Simplify right side
   83,695.72x = 3,907,638,584.32
5. Step 5: Solve for x
   x = 3,907,638,584.32/83,695.72
6. Step 6: Final answer
   x = 46,688.63