Finding the Fourth Proportional to 117,619.50, 162,314.91 and 64,627.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,619.50 : 162,314.91 = 64,627.50 : x
2. Step 2: Convert to fraction form
   117,619.50/162,314.91 = 64,627.50/x
3. Step 3: Cross multiply
   117,619.50x = 162,314.91 × 64,627.50
4. Step 4: Simplify right side
   117,619.50x = 10,490,006,846.03
5. Step 5: Solve for x
   x = 10,490,006,846.03/117,619.50
6. Step 6: Final answer
   x = 89,185.95