Finding the Fourth Proportional to 139,411.17, 210,167.15 and 130,391.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,411.17 : 210,167.15 = 130,391.01 : x
2. Step 2: Convert to fraction form
   139,411.17/210,167.15 = 130,391.01/x
3. Step 3: Cross multiply
   139,411.17x = 210,167.15 × 130,391.01
4. Step 4: Simplify right side
   139,411.17x = 27,403,906,305.37
5. Step 5: Solve for x
   x = 27,403,906,305.37/139,411.17
6. Step 6: Final answer
   x = 196,568.94