Finding the Fourth Proportional to 139,670.44, 209,341.59 and 64,632.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,670.44 : 209,341.59 = 64,632.04 : x
2. Step 2: Convert to fraction form
   139,670.44/209,341.59 = 64,632.04/x
3. Step 3: Cross multiply
   139,670.44x = 209,341.59 × 64,632.04
4. Step 4: Simplify right side
   139,670.44x = 13,530,174,018.54
5. Step 5: Solve for x
   x = 13,530,174,018.54/139,670.44
6. Step 6: Final answer
   x = 96,872.14