Finding the Fourth Proportional to 117,836.18, 162,611.28 and 64,121.34

Step by Step Solution

1. Step 1: Write the proportion equation
   117,836.18 : 162,611.28 = 64,121.34 : x
2. Step 2: Convert to fraction form
   117,836.18/162,611.28 = 64,121.34/x
3. Step 3: Cross multiply
   117,836.18x = 162,611.28 × 64,121.34
4. Step 4: Simplify right side
   117,836.18x = 10,426,853,172.72
5. Step 5: Solve for x
   x = 10,426,853,172.72/117,836.18
6. Step 6: Final answer
   x = 88,486.01