Finding the Fourth Proportional to 191,245.27, 286,877.27 and 72,894.55

Step by Step Solution

1. Step 1: Write the proportion equation
   191,245.27 : 286,877.27 = 72,894.55 : x
2. Step 2: Convert to fraction form
   191,245.27/286,877.27 = 72,894.55/x
3. Step 3: Cross multiply
   191,245.27x = 286,877.27 × 72,894.55
4. Step 4: Simplify right side
   191,245.27x = 20,911,789,501.88
5. Step 5: Solve for x
   x = 20,911,789,501.88/191,245.27
6. Step 6: Final answer
   x = 109,345.39