Finding the Fourth Proportional to 191,797.02, 287,633.34 and 90,579.42

Step by Step Solution

1. Step 1: Write the proportion equation
   191,797.02 : 287,633.34 = 90,579.42 : x
2. Step 2: Convert to fraction form
   191,797.02/287,633.34 = 90,579.42/x
3. Step 3: Cross multiply
   191,797.02x = 287,633.34 × 90,579.42
4. Step 4: Simplify right side
   191,797.02x = 26,053,661,109.86
5. Step 5: Solve for x
   x = 26,053,661,109.86/191,797.02
6. Step 6: Final answer
   x = 135,839.76