Finding the Fourth Proportional to 106,992.10, 147,802.89 and 85,453.57

Step by Step Solution

1. Step 1: Write the proportion equation
   106,992.10 : 147,802.89 = 85,453.57 : x
2. Step 2: Convert to fraction form
   106,992.10/147,802.89 = 85,453.57/x
3. Step 3: Cross multiply
   106,992.10x = 147,802.89 × 85,453.57
4. Step 4: Simplify right side
   106,992.10x = 12,630,284,606.82
5. Step 5: Solve for x
   x = 12,630,284,606.82/106,992.10
6. Step 6: Final answer
   x = 118,048.76