Finding the Fourth Proportional to 120,327.30, 166,053.63 and 65,878.56

Step by Step Solution

1. Step 1: Write the proportion equation
   120,327.30 : 166,053.63 = 65,878.56 : x
2. Step 2: Convert to fraction form
   120,327.30/166,053.63 = 65,878.56/x
3. Step 3: Cross multiply
   120,327.30x = 166,053.63 × 65,878.56
4. Step 4: Simplify right side
   120,327.30x = 10,939,374,027.17
5. Step 5: Solve for x
   x = 10,939,374,027.17/120,327.30
6. Step 6: Final answer
   x = 90,913.48