Finding the Fourth Proportional to 191,505.72, 287,278.20 and 73,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,505.72 : 287,278.20 = 73,276.50 : x
2. Step 2: Convert to fraction form
   191,505.72/287,278.20 = 73,276.50/x
3. Step 3: Cross multiply
   191,505.72x = 287,278.20 × 73,276.50
4. Step 4: Simplify right side
   191,505.72x = 21,050,741,022.30
5. Step 5: Solve for x
   x = 21,050,741,022.30/191,505.72
6. Step 6: Final answer
   x = 109,922.26