Finding the Fourth Proportional to 190,990.25, 286,091.71 and 111,864.59

Step by Step Solution

1. Step 1: Write the proportion equation
   190,990.25 : 286,091.71 = 111,864.59 : x
2. Step 2: Convert to fraction form
   190,990.25/286,091.71 = 111,864.59/x
3. Step 3: Cross multiply
   190,990.25x = 286,091.71 × 111,864.59
4. Step 4: Simplify right side
   190,990.25x = 32,003,530,131.43
5. Step 5: Solve for x
   x = 32,003,530,131.43/190,990.25
6. Step 6: Final answer
   x = 167,566.31