Finding the Fourth Proportional to 117,871.65, 162,667.17 and 64,154.07

Step by Step Solution

1. Step 1: Write the proportion equation
   117,871.65 : 162,667.17 = 64,154.07 : x
2. Step 2: Convert to fraction form
   117,871.65/162,667.17 = 64,154.07/x
3. Step 3: Cross multiply
   117,871.65x = 162,667.17 × 64,154.07
4. Step 4: Simplify right side
   117,871.65x = 10,435,761,010.88
5. Step 5: Solve for x
   x = 10,435,761,010.88/117,871.65
6. Step 6: Final answer
   x = 88,534.95