Finding the Fourth Proportional to 111,854.34, 167,142.15 and 85,053.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111,854.34 : 167,142.15 = 85,053.06 : x
2. Step 2: Convert to fraction form
   111,854.34/167,142.15 = 85,053.06/x
3. Step 3: Cross multiply
   111,854.34x = 167,142.15 × 85,053.06
4. Step 4: Simplify right side
   111,854.34x = 14,215,951,312.48
5. Step 5: Solve for x
   x = 14,215,951,312.48/111,854.34
6. Step 6: Final answer
   x = 127,093.43