Finding the Fourth Proportional to 117,971.65, 162,799.50 and 64,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,971.65 : 162,799.50 = 64,256.50 : x
2. Step 2: Convert to fraction form
   117,971.65/162,799.50 = 64,256.50/x
3. Step 3: Cross multiply
   117,971.65x = 162,799.50 × 64,256.50
4. Step 4: Simplify right side
   117,971.65x = 10,460,926,071.75
5. Step 5: Solve for x
   x = 10,460,926,071.75/117,971.65
6. Step 6: Final answer
   x = 88,673.22