Finding the Fourth Proportional to 118,667.12, 163,760.99 and 64,955.61

Step by Step Solution

1. Step 1: Write the proportion equation
   118,667.12 : 163,760.99 = 64,955.61 : x
2. Step 2: Convert to fraction form
   118,667.12/163,760.99 = 64,955.61/x
3. Step 3: Cross multiply
   118,667.12x = 163,760.99 × 64,955.61
4. Step 4: Simplify right side
   118,667.12x = 10,637,194,674.88
5. Step 5: Solve for x
   x = 10,637,194,674.88/118,667.12
6. Step 6: Final answer
   x = 89,638.94