Finding the Fourth Proportional to 139,158.96, 208,567.36 and 64,175

Step by Step Solution

1. Step 1: Write the proportion equation
   139,158.96 : 208,567.36 = 64,175 : x
2. Step 2: Convert to fraction form
   139,158.96/208,567.36 = 64,175/x
3. Step 3: Cross multiply
   139,158.96x = 208,567.36 × 64,175
4. Step 4: Simplify right side
   139,158.96x = 13,384,810,328
5. Step 5: Solve for x
   x = 13,384,810,328/139,158.96
6. Step 6: Final answer
   x = 96,183.60