Finding the Fourth Proportional to 117,642, 162,345.96 and 64,650

Step by Step Solution

1. Step 1: Write the proportion equation
   117,642 : 162,345.96 = 64,650 : x
2. Step 2: Convert to fraction form
   117,642/162,345.96 = 64,650/x
3. Step 3: Cross multiply
   117,642x = 162,345.96 × 64,650
4. Step 4: Simplify right side
   117,642x = 10,495,666,314
5. Step 5: Solve for x
   x = 10,495,666,314/117,642
6. Step 6: Final answer
   x = 89,217