Finding the Fourth Proportional to 130,870.77, 196,326.81 and 55,991.40

Step by Step Solution

1. Step 1: Write the proportion equation
   130,870.77 : 196,326.81 = 55,991.40 : x
2. Step 2: Convert to fraction form
   130,870.77/196,326.81 = 55,991.40/x
3. Step 3: Cross multiply
   130,870.77x = 196,326.81 × 55,991.40
4. Step 4: Simplify right side
   130,870.77x = 10,992,612,949.43
5. Step 5: Solve for x
   x = 10,992,612,949.43/130,870.77
6. Step 6: Final answer
   x = 83,995.94