Finding the Fourth Proportional to 112,370.72, 154,871.06 and 85,081.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,370.72 : 154,871.06 = 85,081.42 : x
2. Step 2: Convert to fraction form
   112,370.72/154,871.06 = 85,081.42/x
3. Step 3: Cross multiply
   112,370.72x = 154,871.06 × 85,081.42
4. Step 4: Simplify right side
   112,370.72x = 13,176,649,701.71
5. Step 5: Solve for x
   x = 13,176,649,701.71/112,370.72
6. Step 6: Final answer
   x = 117,260.53