Finding the Fourth Proportional to 142,627.10, 196,811.73 and 85,255.07

Step by Step Solution

1. Step 1: Write the proportion equation
   142,627.10 : 196,811.73 = 85,255.07 : x
2. Step 2: Convert to fraction form
   142,627.10/196,811.73 = 85,255.07/x
3. Step 3: Cross multiply
   142,627.10x = 196,811.73 × 85,255.07
4. Step 4: Simplify right side
   142,627.10x = 16,779,196,833.91
5. Step 5: Solve for x
   x = 16,779,196,833.91/142,627.10
6. Step 6: Final answer
   x = 117,643.82