Finding the Fourth Proportional to 129,164.82, 193,749.15 and 85,073.94

Step by Step Solution

1. Step 1: Write the proportion equation
   129,164.82 : 193,749.15 = 85,073.94 : x
2. Step 2: Convert to fraction form
   129,164.82/193,749.15 = 85,073.94/x
3. Step 3: Cross multiply
   129,164.82x = 193,749.15 × 85,073.94
4. Step 4: Simplify right side
   129,164.82x = 16,483,003,562.15
5. Step 5: Solve for x
   x = 16,483,003,562.15/129,164.82
6. Step 6: Final answer
   x = 127,612.17