Finding the Fourth Proportional to 139,144.90, 191,946.42 and 98,874.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,144.90 : 191,946.42 = 98,874.94 : x
2. Step 2: Convert to fraction form
   139,144.90/191,946.42 = 98,874.94/x
3. Step 3: Cross multiply
   139,144.90x = 191,946.42 × 98,874.94
4. Step 4: Simplify right side
   139,144.90x = 18,978,690,760.71
5. Step 5: Solve for x
   x = 18,978,690,760.71/139,144.90
6. Step 6: Final answer
   x = 136,395.16