Finding the Fourth Proportional to 261,826.52, 392,731.94 and 72,298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   261,826.52 : 392,731.94 = 72,298.50 : x
2. Step 2: Convert to fraction form
   261,826.52/392,731.94 = 72,298.50/x
3. Step 3: Cross multiply
   261,826.52x = 392,731.94 × 72,298.50
4. Step 4: Simplify right side
   261,826.52x = 28,393,930,164.09
5. Step 5: Solve for x
   x = 28,393,930,164.09/261,826.52
6. Step 6: Final answer
   x = 108,445.59