Finding the Fourth Proportional to 111,818.46, 167,805.45 and 72,277.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,818.46 : 167,805.45 = 72,277.50 : x
2. Step 2: Convert to fraction form
   111,818.46/167,805.45 = 72,277.50/x
3. Step 3: Cross multiply
   111,818.46x = 167,805.45 × 72,277.50
4. Step 4: Simplify right side
   111,818.46x = 12,128,558,412.38
5. Step 5: Solve for x
   x = 12,128,558,412.38/111,818.46
6. Step 6: Final answer
   x = 108,466.51