Finding the Fourth Proportional to 117,528, 162,188.64 and 64,536

Step by Step Solution

1. Step 1: Write the proportion equation
   117,528 : 162,188.64 = 64,536 : x
2. Step 2: Convert to fraction form
   117,528/162,188.64 = 64,536/x
3. Step 3: Cross multiply
   117,528x = 162,188.64 × 64,536
4. Step 4: Simplify right side
   117,528x = 10,467,006,071.04
5. Step 5: Solve for x
   x = 10,467,006,071.04/117,528
6. Step 6: Final answer
   x = 89,059.68