Finding the Fourth Proportional to 72,970.34, 100,699.02 and 39,436.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,970.34 : 100,699.02 = 39,436.34 : x
2. Step 2: Convert to fraction form
   72,970.34/100,699.02 = 39,436.34/x
3. Step 3: Cross multiply
   72,970.34x = 100,699.02 × 39,436.34
4. Step 4: Simplify right side
   72,970.34x = 3,971,200,286.89
5. Step 5: Solve for x
   x = 3,971,200,286.89/72,970.34
6. Step 6: Final answer
   x = 54,422.12