Finding the Fourth Proportional to 71,499.92, 107,250.50 and 18,191.95

Step by Step Solution

1. Step 1: Write the proportion equation
   71,499.92 : 107,250.50 = 18,191.95 : x
2. Step 2: Convert to fraction form
   71,499.92/107,250.50 = 18,191.95/x
3. Step 3: Cross multiply
   71,499.92x = 107,250.50 × 18,191.95
4. Step 4: Simplify right side
   71,499.92x = 1,951,095,510.83
5. Step 5: Solve for x
   x = 1,951,095,510.83/71,499.92
6. Step 6: Final answer
   x = 27,288.08