Finding the Fourth Proportional to 72,469.92, 108,700.02 and 19,875

Step by Step Solution

1. Step 1: Write the proportion equation
   72,469.92 : 108,700.02 = 19,875 : x
2. Step 2: Convert to fraction form
   72,469.92/108,700.02 = 19,875/x
3. Step 3: Cross multiply
   72,469.92x = 108,700.02 × 19,875
4. Step 4: Simplify right side
   72,469.92x = 2,160,412,897.50
5. Step 5: Solve for x
   x = 2,160,412,897.50/72,469.92
6. Step 6: Final answer
   x = 29,811.17