Finding the Fourth Proportional to 139,393.91, 208,973.32 and 60,448.68

Step by Step Solution

1. Step 1: Write the proportion equation
   139,393.91 : 208,973.32 = 60,448.68 : x
2. Step 2: Convert to fraction form
   139,393.91/208,973.32 = 60,448.68/x
3. Step 3: Cross multiply
   139,393.91x = 208,973.32 × 60,448.68
4. Step 4: Simplify right side
   139,393.91x = 12,632,161,198.10
5. Step 5: Solve for x
   x = 12,632,161,198.10/139,393.91
6. Step 6: Final answer
   x = 90,622.04