Finding the Fourth Proportional to 117,807.75, 162,574.70 and 64,815.75

Step by Step Solution

1. Step 1: Write the proportion equation
   117,807.75 : 162,574.70 = 64,815.75 : x
2. Step 2: Convert to fraction form
   117,807.75/162,574.70 = 64,815.75/x
3. Step 3: Cross multiply
   117,807.75x = 162,574.70 × 64,815.75
4. Step 4: Simplify right side
   117,807.75x = 10,537,401,111.53
5. Step 5: Solve for x
   x = 10,537,401,111.53/117,807.75
6. Step 6: Final answer
   x = 89,445.74