Finding the Fourth Proportional to 139,132.86, 208,697.27 and 96,398.88

Step by Step Solution

1. Step 1: Write the proportion equation
   139,132.86 : 208,697.27 = 96,398.88 : x
2. Step 2: Convert to fraction form
   139,132.86/208,697.27 = 96,398.88/x
3. Step 3: Cross multiply
   139,132.86x = 208,697.27 × 96,398.88
4. Step 4: Simplify right side
   139,132.86x = 20,118,182,605.06
5. Step 5: Solve for x
   x = 20,118,182,605.06/139,132.86
6. Step 6: Final answer
   x = 144,596.92