Finding the Fourth Proportional to 117,887.16, 162,684.18 and 64,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   117,887.16 : 162,684.18 = 64,172.10 : x
2. Step 2: Convert to fraction form
   117,887.16/162,684.18 = 64,172.10/x
3. Step 3: Cross multiply
   117,887.16x = 162,684.18 × 64,172.10
4. Step 4: Simplify right side
   117,887.16x = 10,439,785,467.38
5. Step 5: Solve for x
   x = 10,439,785,467.38/117,887.16
6. Step 6: Final answer
   x = 88,557.44