Finding the Fourth Proportional to 139,160.55, 208,552.01 and 64,115.67

Step by Step Solution

1. Step 1: Write the proportion equation
   139,160.55 : 208,552.01 = 64,115.67 : x
2. Step 2: Convert to fraction form
   139,160.55/208,552.01 = 64,115.67/x
3. Step 3: Cross multiply
   139,160.55x = 208,552.01 × 64,115.67
4. Step 4: Simplify right side
   139,160.55x = 13,371,451,530.42
5. Step 5: Solve for x
   x = 13,371,451,530.42/139,160.55
6. Step 6: Final answer
   x = 96,086.51