Finding the Fourth Proportional to 72,972.50, 100,698.13 and 41,139.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,972.50 : 100,698.13 = 41,139.34 : x
2. Step 2: Convert to fraction form
   72,972.50/100,698.13 = 41,139.34/x
3. Step 3: Cross multiply
   72,972.50x = 100,698.13 × 41,139.34
4. Step 4: Simplify right side
   72,972.50x = 4,142,654,784.73
5. Step 5: Solve for x
   x = 4,142,654,784.73/72,972.50
6. Step 6: Final answer
   x = 56,770.09