Finding the Fourth Proportional to 120,049.75, 165,667.98 and 66,334.78

Step by Step Solution

1. Step 1: Write the proportion equation
   120,049.75 : 165,667.98 = 66,334.78 : x
2. Step 2: Convert to fraction form
   120,049.75/165,667.98 = 66,334.78/x
3. Step 3: Cross multiply
   120,049.75x = 165,667.98 × 66,334.78
4. Step 4: Simplify right side
   120,049.75x = 10,989,549,006.34
5. Step 5: Solve for x
   x = 10,989,549,006.34/120,049.75
6. Step 6: Final answer
   x = 91,541.62