Finding the Fourth Proportional to 130,578.51, 195,867.83 and 86,194.89

Step by Step Solution

1. Step 1: Write the proportion equation
   130,578.51 : 195,867.83 = 86,194.89 : x
2. Step 2: Convert to fraction form
   130,578.51/195,867.83 = 86,194.89/x
3. Step 3: Cross multiply
   130,578.51x = 195,867.83 × 86,194.89
4. Step 4: Simplify right side
   130,578.51x = 16,882,806,061.39
5. Step 5: Solve for x
   x = 16,882,806,061.39/130,578.51
6. Step 6: Final answer
   x = 129,292.38